The store sells 650 pairs of men's shoes, and twice as many women's shoes as men's shoes. How many pairs of men's and women's shoes are sold in the store?
商店卖出男鞋650双，卖出的女鞋是男鞋的2倍，商店共卖出男、女鞋多少双？
<gadget id="calculator">650 * 2</gadget>
<output>1_300</output>

<gadget id="calculator">1_300 + 650</gadget>
<output>1_950</output>

<result>1_950</result>