In multiplication, one factor remains unchanged and the other factor is multiplied by 100, how much should the product be multiplied
在乘法中，一个因数不变，另一个因数乘100，积应乘多少
<gadget id="calculator">5 * 100</gadget>
<output>500</output>

<gadget id="calculator">500 * 3</gadget>
<output>1_500</output>

<gadget id="calculator">5 * 3</gadget>
<output>15</output>

<gadget id="calculator">1_500 / 15</gadget>
<output>100</output>

<result>100</result>