5.1/2.4 When the quotient is 2.1, what is the remainder
5.1/2.4当商是2.1时，余数是多少
<gadget id="calculator">2.4 * 2.1</gadget>
<output>5.04</output>

<gadget id="calculator">5.1 - 5.04</gadget>
<output>0.06</output>

<result>0.06</result>