0.3 divided by 3.8, the quotient is 12, what is the remainder?
0.3除3.8，商是12，余数是多少．
<gadget id="calculator">12 * 0.3</gadget>
<output>3.6</output>

<gadget id="calculator">3.8 - 3.6</gadget>
<output>0.2</output>

<result>0.2</result>