There are 45 pairs of men's and women's leather shoes shipped from the store. If these leather shoes are sold out in 3 days, how many pairs of leather shoes will be sold on average?
商店里运来男式和女式皮鞋各45双，如果把这些皮鞋用3天卖完，平均每要卖出皮鞋多少双？
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">45 * (2/3)</gadget>
<output>30</output>

<result>30</result>