Oou buys 3kg of apples and 2kg of pears, Xiaomei buys 4kg of apples and 3kg of pears, Koizumi buys 3kg of apples and 4kg of pears, Xiaomei spends 5 yuan more than Oou, and Oou spends 4 yuan less than Koizumi Yuan money. How much did Ou Ou, Xiao Mei, and Koizumi spend in total?
欧欧买3千克苹果和2千克梨，小美买4千克苹果和3千克梨，小泉买3千克苹果和4千克梨，小美比欧欧多花5元钱，欧欧比小泉少花4元钱．欧欧、小美、小泉一共花了多少钱？
<gadget id="calculator">4 / 2</gadget>
<output>2</output>

<gadget id="calculator">5 - 2</gadget>
<output>3</output>

<gadget id="calculator">3 + 4 + 3</gadget>
<output>10</output>

<gadget id="calculator">10 * 3</gadget>
<output>30</output>

<gadget id="calculator">2 + 3 + 4</gadget>
<output>9</output>

<gadget id="calculator">9 * 2</gadget>
<output>18</output>

<gadget id="calculator">30 + 18</gadget>
<output>48</output>

<result>48</result>