Wang Hong collected 80 stamps, more than Li Ming (1/7). How many stamps did Li Ming collect?
王红收集邮票80枚，比李明多(1/7)．李明收集邮票多少枚？
<gadget id="calculator">1 / 7</gadget>
<output>1/7 = around 0.142857</output>

<gadget id="calculator">1 + (1/7)</gadget>
<output>8/7 = around 1.142857</output>

<gadget id="calculator">80 / (8/7)</gadget>
<output>70</output>

<result>70</result>