The quotient of 2.5/0.8 is 3, what is the remainder
2.5/0.8得商是3，余数是多少
<gadget id="calculator">0.8 * 3</gadget>
<output>2.4</output>

<gadget id="calculator">2.5 - 2.4</gadget>
<output>0.1</output>

<result>0.1</result>