Mom bought a bag of rice and ate it (3/10), leaving 35 kilograms. How many kilograms does this bag of rice weigh? (Solution of column equation)
妈妈买来一袋大米，吃了(3/10)，还剩35千克．这袋大米重多少千克？(列方程解)
<gadget id="calculator">3 / 10</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">1 - (3/10)</gadget>
<output>7/10 = around 0.7</output>

<gadget id="calculator">35 / (7/10)</gadget>
<output>50</output>

<result>50</result>