Divide 7.8 by 3.8, the quotient is 2, what is the remainder?
7.8除以3.8，商2，余数是多少
<gadget id="calculator">3.8 * 2</gadget>
<output>7.6</output>

<gadget id="calculator">7.8 - 7.6</gadget>
<output>0.2</output>

<result>0.2</result>