On New Year’s Day, a home appliance mall offered a 20% discount for sales promotion. After Uncle Wang bought a washing machine with a 20% discount, it was 220 yuan cheaper than the original price. How much did Uncle Wang pay for this washing machine?
元旦节某家电商城为了促销，实行八折优惠，王叔叔买了一台洗衣机打八折后，比原价便宜了220元，王叔叔买这台洗衣机花了多少钱？
<gadget id="calculator">80 / 100</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">220 / (1/5)</gadget>
<output>1_100</output>

<gadget id="calculator">1_100 * (4/5)</gadget>
<output>880</output>

<result>880</result>