shoe store comes in with 600 pairs of leather shoes. (1/5) of the total amount sold in the first week, and (3/8) of the total amount sold in the second week. How many more pairs did you sell in the second week than in the first week?
某鞋店进来皮鞋600双．第一周卖出总数的(1/5)，第二周卖出总数的(3/8)．第二周比第一周多卖多少双？
<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">(3/8) - (1/5)</gadget>
<output>7/40 = around 0.175</output>

<gadget id="calculator">600 * (7/40)</gadget>
<output>105</output>

<result>105</result>