wood factory wants to make 2012 sets of desks for Hope Primary School. It has been done for 18 days, and 103 sets are made every day. How many sets are left?
一个木工厂要为希望小学做2012套课桌，已经做了18天，每天做103套，还剩多少套没有做？
<gadget id="calculator">18 * 103</gadget>
<output>1_854</output>

<gadget id="calculator">2_012 - 1_854</gadget>
<output>158</output>

<result>158</result>