For a bunch of apples, half of the total sold in the morning is 20 more, and the remaining half is sold in the afternoon, 13 less, and then 3 rotten apples are thrown away, and finally 48 apples are left. How many apples are there in this pair?
一堆苹果，上午卖出总数的一半多20个，下午卖出余下的一半少13个，然后扔掉3个烂苹果，最后剩下48个苹果，这对苹果原来有多少个？
<gadget id="calculator">3 - 13</gadget>
<output>-10</output>

<gadget id="calculator">48 + (-10)</gadget>
<output>38</output>

<gadget id="calculator">38 * 2</gadget>
<output>76</output>

<gadget id="calculator">76 + 20</gadget>
<output>96</output>

<gadget id="calculator">96 * 2</gadget>
<output>192</output>

<result>192</result>