The quotient of 7.8/4 is 1.9, what is the remainder
7.8/4的商是1.9，余数是多少
<gadget id="calculator">1.9 * 4</gadget>
<output>7.6</output>

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

<result>0.2</result>