Lotte brand suits are sold at the original price (3/5). Mr. Wang bought a set for 420 yuan. How much is the original price of each suit?
乐天牌西服按原价的(3/5)出售，汪老师花了420元买了一套，这种西服原价每套多少元？
<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">420 / (3/5)</gadget>
<output>700</output>

<result>700</result>