A fruit shop buys several baskets of apples at a time. The purchase price of each basket of apples is 30 yuan. If it is sold at a price of 40 yuan per basket, then when 5 baskets more than half of all apples are sold, all apples will be taken back. cost, how many baskets of apples did the fruit shop buy wholesale this time?
某水果店一次批发买进苹果若干筐，每筐苹果的进价为30元，如果按照每筐40元的价钱卖出，那么当卖出比全部苹果的一半多5筐时，恰好收回全部苹果的成本，那么这个水果店这次一共批发买进苹果多少筐？
<gadget id="calculator">40 * 5</gadget>
<output>200</output>

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">40 * (1/2)</gadget>
<output>20</output>

<gadget id="calculator">30 - 20</gadget>
<output>10</output>

<gadget id="calculator">200 / 10</gadget>
<output>20</output>

<result>20</result>