When the quotient of 0.8/0.3 is 2, what is the remainder?
当0.8/0.3的商是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>