18.4/3.6, when the quotient is 5.1, what is the remainder?
18.4/3.6，当商是5.1时，余数是多少．
<gadget id="calculator">3.6 * 5.1</gadget>
<output>18.36</output>

<gadget id="calculator">18.4 - 18.36</gadget>
<output>0.04</output>

<result>0.04</result>