multiplicative measure

例句：

1. 1. The product of 3 and 4 is 12.
   3乘以4等于12。
2. 2. Multiplying by 5 gives us 25.
   乘以5我们得到25。
3. 3. Multiplying these numbers together will give us the sum.
   把这些数相乘将给出总和。