There are two bags of rice, A and B. Bag A weighs 90 kilograms. After taking out (1/3) of it from bag A, the weight ratio of the two bags of rice is 3:4. How much does bag B weigh in kilograms?
有甲、乙两袋大米，甲袋重90千克，从甲袋中取出它的(1/3)后，这时两袋大米的重量比是3：4，乙袋大米重多少千克？
<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">3 / 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">90 * (8/9)</gadget>
<output>80</output>

<result>80</result>