When two factors are multiplied, the first factor is multiplied by 4 times, and the second factor is multiplied by 2 times, the product is multiplied by how many times
两个因数相乘，第一个因数扩大4倍，第2个因数扩大2倍，积就扩大多少倍
<gadget id="calculator">4 * 2</gadget>
<output>8</output>

<result>8</result>