There is a bag of flour, 15 kg is eaten, which is 5 kg more than the uneaten (2/5), how much does this bag of flour originally weigh?
有一袋面粉，吃去15千克，比没吃的(2/5)多5千克，这袋面粉原来重多少千克？
<gadget id="calculator">15 - 5</gadget>
<output>10</output>

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">10 / (2/5)</gadget>
<output>25</output>

<gadget id="calculator">25 + 15</gadget>
<output>40</output>

<result>40</result>