0.3 divided by 0.8, the quotient is 2, what is the remainder
0.3除0.8，商是2，余数是多少
<gadget id="calculator">0.3 * 2</gadget>
<output>0.6</output>

<gadget id="calculator">0.8 - 0.6</gadget>
<output>0.2</output>

<result>0.2</result>