Calculate 39.3/7.8, what is the remainder when the quotient is 5
计算39.3/7.8，当商是5时，余数是多少
<gadget id="calculator">7.8 * 5</gadget>
<output>39</output>

<gadget id="calculator">39.3 - 39</gadget>
<output>0.3</output>

<result>0.3</result>