certain primary school has 60 students participating in the science and technology group this year, an increase of (1/5) compared to last year. How many students participated in the science and technology group last year? What is the correct column
某小学今年有60名同学参加科技小组，比去年增加了(1/5)，去年有多少人参加科技小组？正确列式是多少
<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">60 / (6/5)</gadget>
<output>50</output>

<result>50</result>