There are two baskets of pears, the first basket is sold (1/3), and the second basket is sold (1/4). At this time, the weight of the two baskets of pears is equal. It is known that the first basket is 45 kg, and the second basket is 45 kg. How many kilograms did the pear originally weigh?
有两筐梨，第一筐卖出(1/3)，第二筐卖出(1/4)后，这时两筐梨的重量相等，已知原来第一筐是45千克，第二筐梨原来重多少千克？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 - (1/3)</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 - (1/4)</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">(2/3) / (3/4)</gadget>
<output>8/9 = around 0.888889</output>

<gadget id="calculator">45 * (8/9)</gadget>
<output>40</output>

<result>40</result>