Xiao Pang ate 5 pieces of candy, and there were 8 pieces of candy left, how much of these candies did he eat?
小胖吃了5块糖，还剩8块糖，吃了这些糖的多少．
<gadget id="calculator">5 + 8</gadget>
<output>13</output>

<gadget id="calculator">5 / 13</gadget>
<output>5/13 = around 0.384615</output>

<result>5/13 = around 0.384615</result>