There are 86 apples in two baskets. Take 4 apples from the first basket and put them in the second basket. The number of apples in the two baskets is the same. How many apples are there in the first basket?
两筐苹果共86个，从第一筐中取出4个放入第二筐，两筐的苹果个数就一样多，第一筐原来有多少个．
<gadget id="calculator">86 / 2</gadget>
<output>43</output>

<gadget id="calculator">43 + 4</gadget>
<output>47</output>

<result>47</result>