The number A is 35, the number B is 20% of the number A, what is the number B?
甲数是35，乙数是甲数的20%，乙数是多少．
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">35 * (1/5)</gadget>
<output>7</output>

<result>7</result>