When the quotient of 0.49/0.4 is 1.2, what is the remainder?
0.49/0.4的商是1.2时，余数是多少．
<gadget id="calculator">1.2 * 0.4</gadget>
<output>0.48</output>

<gadget id="calculator">0.49 - 0.48</gadget>
<output>0.01</output>

<result>0.01</result>