Calculate 0.15/0.04, when the quotient is 3, what is the remainder?
计算0.15/0.04，商为3时，余数是多少．
<gadget id="calculator">0.04 * 3</gadget>
<output>0.12</output>

<gadget id="calculator">0.15 - 0.12</gadget>
<output>0.03</output>

<result>0.03</result>