A microwave oven is now priced at 468 yuan per unit, which is 10% lower than before. How much was the original price of each unit?
一种微波炉，现在每台售价468元，比原来降低了10%，原来每台售价多少元？
<gadget id="calculator">10 / 100</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">1 - (1/10)</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">468 / (9/10)</gadget>
<output>520</output>

<result>520</result>