The fruit shop brought in 100 kilograms of apples and sold 75 kilograms at a price of 1.5 yuan per kilogram. The boss decided to reduce the price by 20% because the rest were not fresh. How much did the apples sell for?
水果店运进100千克苹果，按每千克1.5元售价卖出75千克后，由于剩下的不新鲜，老板决定降价20%出售，这批苹果共卖了多少元？
<gadget id="calculator">1.5 * 75</gadget>
<output>112.5</output>

<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">100 - 75</gadget>
<output>25</output>

<gadget id="calculator">1.5 * (4/5) * 25</gadget>
<output>30</output>

<gadget id="calculator">112.5 + 30</gadget>
<output>142.5</output>

<result>142.5</result>