A clothing store buys a batch of clothes at a price of 65 yuan a set, and then sells them at a price of 110 yuan a set. When (5/7) of this batch of clothes is sold, the store makes a profit of 1575 yuan. How many sets of this kind of clothing?
服装商场以65元一套的价格购进一批服装，然后以110元一套的价格出售，当卖出这批服装的(5/7)时，商场获利1575元，问商场共购进该种服装多少套？
<gadget id="calculator">110 - 65</gadget>
<output>45</output>

<gadget id="calculator">5 / 7</gadget>
<output>5/7 = around 0.714286</output>

<gadget id="calculator">1_575 / 45 / (5/7)</gadget>
<output>49</output>

<result>49</result>