Divide 1200 by 15, subtract the sum of 21 and 19, what is the result?
1200除以15的商，减去21与19的和，得多少？
<gadget id="calculator">1_200 / 15</gadget>
<output>80</output>

<gadget id="calculator">21 + 19</gadget>
<output>40</output>

<gadget id="calculator">80 - 40</gadget>
<output>40</output>

<result>40</result>