How do you find the product of two numbers which are in standard form?需要例子

standard form,在不同的国家,有不同的意义.
最常见的,是指应该,指科学计数法.举例如下：
2.2×10^2 × 1.5×10^3 = 3.3×10^5How do you find the product of two numbers which are in standard form?那这个怎么举例呢？？？上面不是举例了吗？the product of two numbers 两个数的积谢谢，我被朋友搞糊涂了。