A bag of rice was shipped from the school cafeteria, 40% of it was eaten in the first week, and (1/5) was eaten in the second week, leaving 60 kilograms. How many kilograms did the bag of rice originally have?
学校食堂运来一袋大米，第一周吃了40%，第二周吃了(1/5)，还剩60千克，这袋大米原有多少千克？
<gadget id="calculator">40 / 100</gadget>
<output>2/5 = around 0.4</output>

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

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

<gadget id="calculator">60 / (2/5)</gadget>
<output>150</output>

<result>150</result>