Xiao Ming's father earns 2,500 yuan a month, and his mother earns 1,500 yuan a month. The monthly expenditure accounts for about 3/5 of their salary. How much is Xiao Ming's family's monthly expenditure?
小明的爸爸每月工资2500元，妈妈每月工资1500元，每月支出大约要占俩人工资的(3/5)，小明家每月支出大约是多少元？
<gadget id="calculator">2_500 + 1_500</gadget>
<output>4_000</output>

<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">4_000 * (3/5)</gadget>
<output>2_400</output>

<result>2_400</result>