In multiplication, the product is 100. If one factor is enlarged by 20 times and the other factor is reduced by 10 times, what is the product?
在乘法运算中积是100，如果一个因数扩大20倍，另一个因数缩小10倍，积是多少．
<gadget id="calculator">20 / 10</gadget>
<output>2</output>

<gadget id="calculator">100 * 2</gadget>
<output>200</output>

<result>200</result>