A batch of fruit is shipped in from the store. Apples are 20 kilograms more than pears (4/5). It is known that the weight of apples is 120 kilograms. How much is the weight of pears?
商店运进一批水果，苹果比梨的(4/5)多20千克，已知苹果重120千克，梨重多少千克？
<gadget id="calculator">120 - 20</gadget>
<output>100</output>

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

<gadget id="calculator">100 / (4/5)</gadget>
<output>125</output>

<result>125</result>