9.7/0.5, what is the remainder when the quotient is 19
9.7/0.5，当商是19时，余数是多少
<gadget id="calculator">0.5 * 19</gadget>
<output>9.5</output>

<gadget id="calculator">9.7 - 9.5</gadget>
<output>0.2</output>

<result>0.2</result>