The divisor is 16 times the quotient, the divisor is 80, what is the dividend.
除数是商的16倍，除数是80，被除数是多少．
<gadget id="calculator">80 / 16</gadget>
<output>5</output>

<gadget id="calculator">5 * 80</gadget>
<output>400</output>

<result>400</result>