乘以4 meaning in Chinese

multiplied by 4

What is 100 times 4 divided by te squre root of 100
100乘以4再除以100的平方根等于多少？
If you know that , then you know the answer to this : how many years ago did three scientists at texas instruments invent the handheld electronic calculator
一百乘以4再除以100的平方根是多少，如果你知道答案，那么你就能够回答此问题：得克萨斯州仪器的三位科学家发明手持电子计算器是在多少年以前？