乘以

multiply by

verb Rare #26,549
multiply by Used in mathematical expressions to indicate multiplication; for example, 二乘以三 means “two multiplied by three.”
CH: 三乘以四等于十二。
EN: Three multiplied by four equals twelve.

六乘以六是多少?

What is six times six?

— 无人知晓 (2004)

五乘以七等于多少?

What is five times seven?

— 放牛班的春天 (2004)

二乘以二等于四。

Two times two equals four.