The Feiyu brand English typewriter for the new semester is sold at 10% off the original price. The price is 369 yuan, how much cheaper than the original price?
新学期飞鱼牌英文打字机，按原价的九折出售，售价是369元，比原价便宜了多少元？
<gadget id="calculator">90 / 100</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">369 / (9/10)</gadget>
<output>410</output>

<gadget id="calculator">410 - 369</gadget>
<output>41</output>

<result>41</result>