When multiplying two numbers that are not 0, if both factors are expanded to 10 times, then the product is expanded to its multiple.
两个不为0的数相乘，如果两个因数都扩大到它的10倍，那么积就扩大到它的多少倍．
<gadget id="calculator">10 * 10</gadget>
<output>100</output>

<result>100</result>