The price of a VCD player is 900 yuan, which is 20% lower than the original price. What was the original price?
一种VCD影碟机的售价是900元，比原来降价20%．原来的价钱是多少元？
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 - (1/5)</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">900 / (4/5)</gadget>
<output>1_125</output>

<result>1_125</result>