There are two baskets of apples. It is known that the mass of apples in the first basket is (3/5) that of the second basket. Basket (1/3). How many kilograms did the first basket of apples weigh?
有两筐苹果，已知第一筐苹果的质量是第二筐的(3/5)，若从第一筐中拿出20千克放入第二筐，则第一筐苹果的质量是第二筐的(1/3)．原来第一筐苹果重多少千克？
<gadget id="calculator">1 + 3</gadget>
<output>4</output>

<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">3 + 5</gadget>
<output>8</output>

<gadget id="calculator">5 / 8</gadget>
<output>5/8 = around 0.625</output>

<gadget id="calculator">(3/4) - (5/8)</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">20 / (1/8)</gadget>
<output>160</output>

<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">160 * (3/8)</gadget>
<output>60</output>

<result>60</result>