There are two baskets of apples, one basket A is used (1/5), and the second basket is used (1/7), the remaining two baskets are the same, it is known that the A basket has 45 kilograms, how many kilograms of apples are there in the B basket?
有两筐苹果，单甲筐用去(1/5)，乙筐用去(1/7)后，剩下的两筐同样多，已知甲筐有45千克，乙筐苹果有多少千克？
<gadget id="calculator">1 / 5</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">1 / 7</gadget>
<output>1/7 = around 0.142857</output>

<gadget id="calculator">1 - (1/7)</gadget>
<output>6/7 = around 0.857143</output>

<gadget id="calculator">(4/5) / (6/7)</gadget>
<output>14/15 = around 0.933333</output>

<gadget id="calculator">45 * (14/15)</gadget>
<output>42</output>

<result>42</result>