There is a batch of rubber shoes in the store, all (1/3) of them are sold on the first day, and 75 pairs are sold on the second day, which is exactly 1.5 times the sales on the first day. How many pairs are there in this batch of rubber shoes?
商店有一批胶鞋，第一天卖了全部的(1/3)，第二天卖了75双，刚好是第一天卖的1.5倍，这批胶鞋有多少双？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">75 / 1.5 / (1/3)</gadget>
<output>150</output>

<result>150</result>