80-19=61, 183/61=3, rewrite the above two step-by-step formulas into a comprehensive formula.
80-19=61，183/61=3，把以上两个分步算式改写成综合算式是多少．
<gadget id="calculator">80 - 19</gadget>
<output>61</output>

<gadget id="calculator">183 / 61</gadget>
<output>3</output>

<result>3</result>