Distribute a bag of candies to the children. If each person has 5 candies, there will be 12 remaining. If each person has 6 candies, there will be a difference of 6. Ask how many children there are. (solution by equation)
一袋糖果分给小朋友，若每人5颗，则余12颗，若每人6颗，则差6颗，问有多少个小朋友．(用方程解)
<gadget id="calculator">6 + 12</gadget>
<output>18</output>

<gadget id="calculator">6 - 5</gadget>
<output>1</output>

<gadget id="calculator">18 / 1</gadget>
<output>18</output>

<result>18</result>