Xiao Wang, Xiao Li and Xiao Zhang each make 120 of the same machine parts at the same time. When Xiao Wang finishes, Xiao Li makes 100 and Xiao Zhang makes 60. According to this calculation, when Xiao Li finishes, Xiao Zhang How many did not do.
小王、小李和小张，同时各做120个同样的机器零件，当小王做完时，小李做100个，小张做60个，照这样计算，小李做完时，小张没做的有多少．
<gadget id="calculator">120 - 100</gadget>
<output>20</output>

<gadget id="calculator">100 / 60</gadget>
<output>5/3 = around 1.666667</output>

<gadget id="calculator">1 / (5/3)</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">20 * (3/5)</gadget>
<output>12</output>

<gadget id="calculator">120 - 60 - 12</gadget>
<output>48</output>

<result>48</result>