The quotient of 4.5/0.7 is 6, what is the remainder?
4.5/0.7的商是6，余数是多少．
<gadget id="calculator">0.7 * 6</gadget>
<output>4.2</output>

<gadget id="calculator">4.5 - 4.2</gadget>
<output>0.3</output>

<result>0.3</result>