Aunt Li went to the home appliance store to buy a water heater. If she bought a water heater with a 10% discount, it would cost 1125 yuan. How much would it cost if she bought it with a 20% discount?
李阿姨到家电商场买热水器，如果按九折购买需要花1125元，那么按八折购买，需要花多少钱？
<gadget id="calculator">90 / 100</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">1_125 / (9/10)</gadget>
<output>1_250</output>

<gadget id="calculator">80 / 100</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">1_250 * (4/5)</gadget>
<output>1_000</output>

<result>1_000</result>