Solve the following fraction multiplication problems: Problem 1: 16/4 12/6 14/18 Problem 2: 18/12 16/12 12/4

$$\frac{16}{4} \times \frac{12}{6} \times \frac{14}{18}$$

Cancel 16 and 4: $16 \div 4 = 4$, $4 \div 4 = 1$.
The expression becomes:

$$\frac{4}{1} \times \frac{12}{6} \times \frac{14}{18}$$

Cancel 12 and 6: $12 \div 6 = 2$, $6 \div 6 = 1$.
The expression becomes:

$$\frac{4}{1} \times \frac{2}{1} \times \frac{14}{18}$$

Cancel 14 and 18 by dividing by 2: $14 \div 2 = 7$, $18 \div 2 = 9$.
The expression becomes:

$$\frac{4}{1} \times \frac{2}{1} \times \frac{7}{9}$$

$$\frac{4 \times 2 \times 7}{1 \times 1 \times 9} = \frac{56}{9}$$

The final answer is $\boxed{\frac{56}{9}}$.

: $\frac{18}{12} \times \frac{16}{12} \times \frac{12}{4}$

$$\frac{18}{12} \times \frac{16}{12} \times \frac{12}{4}$$

Cancel 12 (denominator of the first fraction) and 12 (numerator of the third fraction): $12 \div 12 = 1$.
The expression becomes:

$$\frac{18}{1} \times \frac{16}{12} \times \frac{1}{4}$$

Cancel 18 and 12 by dividing by 6: $18 \div 6 = 3$, $12 \div 6 = 2$.
The expression becomes:

$$\frac{3}{1} \times \frac{16}{2} \times \frac{1}{4}$$

Cancel 16 and 2: $16 \div 2 = 8$, $2 \div 2 = 1$.
The expression becomes:

$$\frac{3}{1} \times \frac{8}{1} \times \frac{1}{4}$$

Cancel 8 and 4: $8 \div 4 = 2$, $4 \div 4 = 1$.
The expression becomes:

$$\frac{3}{1} \times \frac{2}{1} \times \frac{1}{1}$$

$$\frac{3 \times 2 \times 1}{1 \times 1 \times 1} = \frac{6}{1} = 6$$

The final answer is $\boxed{\text{6}}$.

: $\frac{16}{12} \times \frac{12}{4} \times \frac{12}{14}$

$$\frac{16}{12} \times \frac{12}{4} \times \frac{12}{14}$$

Cancel 12 (denominator of the first fraction) and 12 (numerator of the second fraction): $12 \div 12 = 1$.
The expression becomes:

$$\frac{16}{1} \times \frac{1}{4} \times \frac{12}{14}$$

Cancel 16 and 4: $16 \div 4 = 4$, $4 \div 4 = 1$.
The expression becomes:

$$\frac{4}{1} \times \frac{1}{1} \times \frac{12}{14}$$

Cancel 12 and 14 by dividing by 2: $12 \div 2 = 6$, $14 \div 2 = 7$.
The expression becomes:

$$\frac{4}{1} \times \frac{1}{1} \times \frac{6}{7}$$

$$\frac{4 \times 1 \times 6}{1 \times 1 \times 7} = \frac{24}{7}$$

The final answer is $\boxed{\frac{24}{7}}$.

: $\frac{12}{6} \times \frac{12}{4} \times \frac{14}{12}$

$$\frac{12}{6} \times \frac{12}{4} \times \frac{14}{12}$$

Cancel 12 (numerator of the first fraction) and 6 (denominator of the first fraction): $12 \div 6 = 2$, $6 \div 6 = 1$.
The expression becomes:

$$\frac{2}{1} \times \frac{12}{4} \times \frac{14}{12}$$

Cancel 12 (numerator of the second fraction) and 4 (denominator of the second fraction): $12 \div 4 = 3$, $4 \div 4 = 1$.
The expression becomes:

$$\frac{2}{1} \times \frac{3}{1} \times \frac{14}{12}$$

Cancel 14 and 12 by dividing by 2: $14 \div 2 = 7$, $12 \div 2 = 6$.
The expression becomes:

$$\frac{2}{1} \times \frac{3}{1} \times \frac{7}{6}$$

Cancel 2 (numerator of the first fraction) and 6 (denominator of the third fraction): $2 \div 2 = 1$, $6 \div 2 = 3$.
The expression becomes:

$$\frac{1}{1} \times \frac{3}{1} \times \frac{7}{3}$$

Cancel 3 (numerator of the second fraction) and 3 (denominator of the third fraction): $3 \div 3 = 1$.
The expression becomes:

$$\frac{1}{1} \times \frac{1}{1} \times \frac{7}{1}$$

$$\frac{1 \times 1 \times 7}{1 \times 1 \times 1} = \frac{7}{1} = 7$$

The final answer is $\boxed{\text{7}}$.