△/□=6, △+□=42, then △=how much.
△/□=6，△+□=42，则△=多少．
<gadget id="calculator">6 + 1</gadget>
<output>7</output>

<gadget id="calculator">42 / 7</gadget>
<output>6</output>

<gadget id="calculator">6 * 6</gadget>
<output>36</output>

<result>36</result>