The original price of a set of suits is 350 yuan, and the merchant has launched a campaign of "buy four, get one free". How much is the actual price of this suit reduced?
一套西服原价350元，商家搞活动"买四送一"，这套西服实际降低了多少元．
<gadget id="calculator">4 + 1</gadget>
<output>5</output>

<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">1 - (4/5)</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">350 * (1/5)</gadget>
<output>70</output>

<result>70</result>