The sixth grade handed in 160 works, more than the fifth grade (1/7), how many works were handed in in the fifth grade?
六年级上交作品160件，比五年级多(1/7)，五年级上交作品多少件？
<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">160 / (8/7)</gadget>
<output>140</output>

<result>140</result>