After Kobayashi ate 8 biscuits, Kobayashi now has 4 biscuits, how many biscuits did Kobayashi originally have?
小林吃了8块饼干后，小林现在有4块饼干，小林原来有多少块饼干？
<gadget id="calculator">8 + 4</gadget>
<output>12</output>

<result>12</result>