13.5/0.7, when the quotient is 19, what is the remainder?
13.5/0.7，当商是19时，余数是多少．
<gadget id="calculator">0.7 * 19</gadget>
<output>13.3</output>

<gadget id="calculator">13.5 - 13.3</gadget>
<output>0.2</output>

<result>0.2</result>