When dividing two numbers, the divisor is increased by 10 times, and the quotient is reduced by 5 times, what is the dividend?
两数相除，除数扩大10倍，要使商缩小5倍，被除数应多少．
<gadget id="calculator">80 / 40</gadget>
<output>2</output>

<result>2</result>