Write 450/50=9, 79+9=88, 88-8=80 into a comprehensive formula: how much.
把450/50=9,79+9=88,88-8=80写成综合算式是：多少．
<gadget id="calculator">450 / 50</gadget>
<output>9</output>

<gadget id="calculator">9 - 8</gadget>
<output>1</output>

<gadget id="calculator">79 + 1</gadget>
<output>80</output>

<result>80</result>