A kind of refrigerator is currently on sale at 80% off. If it is sold at a 25% discount, it can be reduced by another 150 yuan. How much is the original price of this kind of refrigerator?
一种冰箱现在打八拆出售，如果打七五折出售，就可以再降150元，这种冰箱原价是多少元？
<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">150 / (1/20)</gadget>
<output>3_000</output>

<result>3_000</result>