0.7/0.15, when the quotient is 4, what is the remainder?
0.7/0.15，商是4时，余数是多少．
<gadget id="calculator">0.15 * 4</gadget>
<output>0.6</output>

<gadget id="calculator">0.7 - 0.6</gadget>
<output>0.1</output>

<result>0.1</result>