There is a batch of clothes in the clothing store. After selling 30% of the clothes on the first day, another 120 pieces are shipped in. At this time, the number of clothes in the store is just 6% less than before. How many pieces of clothes did the store originally have?
服装店有一批衣服，第一天卖出30%后，又运来120件，这时店里的服装正好比原来少6%，店里原来有服装多少件？
<gadget id="calculator">6 / 100</gadget>
<output>3/50 = around 0.06</output>

<gadget id="calculator">1 - (3/50)</gadget>
<output>47/50 = around 0.94</output>

<gadget id="calculator">30 / 100</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">1 - (3/10)</gadget>
<output>7/10 = around 0.7</output>

<gadget id="calculator">(47/50) - (7/10)</gadget>
<output>6/25 = around 0.24</output>

<gadget id="calculator">120 / (6/25)</gadget>
<output>500</output>

<result>500</result>