The quotient of 2500/800 is 3, what is the remainder?
2500/800的商是3，余数是多少．
<gadget id="calculator">800 * 3</gadget>
<output>2_400</output>

<gadget id="calculator">2_500 - 2_400</gadget>
<output>100</output>

<result>100</result>