Aunt Li bought a coat with a price tag of 498 yuan, and it was just in time for a 20% discount and then a 10% discount. Aunt Li paid the salesperson 400 yuan. How much should I get back?
李阿姨买了一件标价为498元的大衣，正赶上打八折后再打九折的活动，李阿姨付给营业员400元，应找回多少元？
<gadget id="calculator">80 / 100</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">90 / 100</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">498 * (4/5) * (9/10)</gadget>
<output>8_964/25 = around 358.56</output>

<gadget id="calculator">400 - (8_964/25)</gadget>
<output>1_036/25 = around 41.44</output>

<result>1_036/25 = around 41.44</result>