bag of rice, I ate it (1/5) in the first week, ate 30% of it in the second week, and ate 10 kilograms more in the second week than in the first week, how many kilograms of this bag of rice?
一袋大米，第一周吃了它的(1/5)，第二周吃了它的30%，第二周比第一周多吃10千克，这袋大米有多少千克？
<gadget id="calculator">30 / 100</gadget>
<output>3/10 = around 0.3</output>

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

<gadget id="calculator">(3/10) - (1/5)</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">10 / (1/10)</gadget>
<output>100</output>

<result>100</result>