The quotient of dividing two numbers is 80. If the dividend remains the same and the divisor is multiplied by 4, what is the quotient?
两个数相除的商是80，如果被除数不变，除数乘4，商是多少．
<gadget id="calculator">1 * 4</gadget>
<output>4</output>

<gadget id="calculator">80 / 1 / 4</gadget>
<output>20</output>

<result>20</result>