The ratio of the number of apples in the two baskets A and B is 4:1. After taking out 130 apples from the A basket and putting them into the B basket, the ratio of the number of apples in the two baskets is 7:5. How many apples are there in the A basket?
甲、乙两筐苹果的个数比是4：1，从甲筐中取出130个放入乙筐后，两筐的苹果的个数比为7：5，求原来甲筐有多少个苹果？
<gadget id="calculator">1 + 4</gadget>
<output>5</output>

<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">5 + 7</gadget>
<output>12</output>

<gadget id="calculator">7 / 12</gadget>
<output>7/12 = around 0.583333</output>

<gadget id="calculator">(4/5) - (7/12)</gadget>
<output>13/60 = around 0.216667</output>

<gadget id="calculator">130 / (13/60)</gadget>
<output>600</output>

<gadget id="calculator">600 * (4/5)</gadget>
<output>480</output>

<result>480</result>