Xiao Ming and Xiao Lin set off from places A and B at the same time, and Xiao Ming's speed is (3/4) that of Xiao Lin. If Xiao Ming walked 12 kilometers less than Xiao Lin when they met, how many kilometers are there between A and B?
小明和小林分别从甲、乙两地同时相对出发，小明速度是小林的(3/4)．如果相遇时小明比小林少走了12千米，甲、乙两地相距多少千米？
<gadget id="calculator">3 + 4</gadget>
<output>7</output>

<gadget id="calculator">4 / 7</gadget>
<output>4/7 = around 0.571429</output>

<gadget id="calculator">3 / 7</gadget>
<output>3/7 = around 0.428571</output>

<gadget id="calculator">(4/7) - (3/7)</gadget>
<output>1/7 = around 0.142857</output>

<gadget id="calculator">12 / (1/7)</gadget>
<output>84</output>

<result>84</result>