72-27=45,72+18=90,90/45=2, what is the comprehensive formula rewritten
72-27=45,72+18=90,90/45=2，改写为综合算式是多少
<gadget id="calculator">72 + 18</gadget>
<output>90</output>

<gadget id="calculator">72 - 27</gadget>
<output>45</output>

<gadget id="calculator">90 / 45</gadget>
<output>2</output>

<result>2</result>