The sixth grade students collected 180 cans, the sixth grade students collected more (1/5) than the fifth grade students, how many cans did the fifth grade students collect?
六年级同学收集了180个易拉罐，六年级同学比五年级多收集了(1/5)，五年级收集了多少个易拉罐？
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 + (1/5)</gadget>
<output>6/5 = around 1.2</output>

<gadget id="calculator">180 / (6/5)</gadget>
<output>150</output>

<result>150</result>