The two storage rooms A and B are respectively equipped with 43 kg and 37 kg of mung beans. If the mung beans in room B are put into room A, when room A is full, the remaining mung beans in room B will account for (1/2) of the capacity of room B. ), if the mung beans in room A are put into room B, when room B is full, the remaining mung beans in room A account for (1/3) of the capacity of room A, what is the capacity of room B in kilograms?
A、B两间储藏室分别装有绿豆43公斤和37公斤，如果将B室的绿豆往A室装，当A室装满后，B室内剩下的绿豆占B室容量的(1/2)，如果将A室的绿豆往B室装，当B室装满后，A室内剩下的绿豆占A室容量的(1/3)，则B室的容量为多少公斤．
<gadget id="calculator">43 + 37</gadget>
<output>80</output>

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

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">(3/4) + (1/2)</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">80 / (5/4)</gadget>
<output>64</output>

<result>64</result>