The cafeteria bought (3/5) tons of cabbage, and the bought cabbage was (1/5) more tons than radishes. How many tons of radishes were bought?
食堂买来(3/5)吨白菜，买来的白菜比萝卜多(1/5)吨，买来萝卜多少吨？
<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">(3/5) - (1/5)</gadget>
<output>2/5 = around 0.4</output>

<result>2/5 = around 0.4</result>