If 5 times of a number is 250, what is 7 times of this number?
一个数的5倍是250，这个数的7倍是多少．
<gadget id="calculator">250 / 5</gadget>
<output>50</output>

<gadget id="calculator">50 * 7</gadget>
<output>350</output>

<result>350</result>