There are two bags of flour, the first bag weighs 60 kg, if 10 kg is taken from the second bag and put into the first bag, then the two bags of flour weigh the same. Q: How many kilograms does the second bag of flour weigh?
有两包面粉，第一包重60千克，如果从第二包取出10千克放入第一包，那么两包面粉一样重．问：第二包面粉重多少千克？
<gadget id="calculator">10 * 2</gadget>
<output>20</output>

<gadget id="calculator">60 + 20</gadget>
<output>80</output>

<result>80</result>