68.9/3.4 After the quotient is 20, what is the remainder
68.9/3.4商20后，余数是多少
<gadget id="calculator">3.4 * 20</gadget>
<output>68</output>

<gadget id="calculator">68.9 - 68</gadget>
<output>0.9</output>

<result>0.9</result>