Teacher Zhang brought 1000 yuan to buy apples. Bought 23 boxes of apples at 42 yuan per box. How much money does Mr. Zhang have left?
张老师带了1000元钱买苹果．买了每箱42元的苹果23箱．张老师还剩下多少钱？
<gadget id="calculator">42 * 23</gadget>
<output>966</output>

<gadget id="calculator">1_000 - 966</gadget>
<output>34</output>

<result>34</result>