The ratio of the number of boxes of chalks A and B is 5:1. If 12 boxes of chalks are taken out from box A and put into box B, the ratio of the number of chalks between A and B is 7:5. How many boxes of chalks are there in total? box?
甲、乙两箱粉笔的盒数之比是5：1，如果从甲箱里取出12盒放入乙箱后，甲、乙两箱粉笔的数量比是7：5，那么两箱粉笔共有多少盒？
<gadget id="calculator">5 + 1</gadget>
<output>6</output>

<gadget id="calculator">5 / 6</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">7 + 5</gadget>
<output>12</output>

<gadget id="calculator">7 / 12</gadget>
<output>7/12 = around 0.583333</output>

<gadget id="calculator">(5/6) - (7/12)</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">12 / (1/4)</gadget>
<output>48</output>

<result>48</result>