To celebrate Children's Day, Class 6 and Class 3 have to make 120 small flags, which have already been done (5/6), how many flags are left?
为庆祝六一儿童节，六3班要做120面小旗，已经做了(5/6)，还有多少面没做？
<gadget id="calculator">5 / 6</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">120 * (5/6)</gadget>
<output>100</output>

<gadget id="calculator">120 - 100</gadget>
<output>20</output>

<result>20</result>