How much is it to combine 67-25=42 and 42/6=7 into a comprehensive formula.
把67-25=42、42/6=7合并成综合算式多少．
<gadget id="calculator">67 - 25</gadget>
<output>42</output>

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

<result>7</result>