If the price of a color TV is 1800 yuan, which is (2/5) of a computer, then how much is the price of a computer.
如果一台彩电的价格是1800元，是一台电脑的(2/5)，则一台电脑的价格是多少元．
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1_800 / (2/5)</gadget>
<output>4_500</output>

<result>4_500</result>