When I bought this air conditioner, it was at a promotional price. I bought it at 80% of the original price. Now the market sells it at 75% of the original price. If I buy it now, I will spend 750 yuan less. How much is the original price of this air conditioner?
这台空调我买的时候是促销价，是按照原价的80%买的，现在商场按原价的75%来出售，如果现在买会少花750元．这台空调的原价是多少元？
<gadget id="calculator">80 / 100</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">75 / 100</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">(4/5) - (3/4)</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">750 / (1/20)</gadget>
<output>15_000</output>

<result>15_000</result>