Li Chen's average monthly living expenses are 2,400 yuan, which accounts for exactly 60% of his monthly income. How much does Li Chenyue earn?
李晨平均每个月生活支出2400元，正好占他月收入的60%．李晨月收入多少元？
<gadget id="calculator">60 / 100</gadget>
<output>3/5 = around 0.6</output>

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

<result>4_000</result>