Two people, A and B, set off from A and B at the same time and walk toward each other. When they start, their speed ratio is 3:2. After meeting, A speeds up 20% and B speeds up 30%. When A arrives at B, B is still 42 kilometers away from A, how many kilometers is the distance between A and B?
甲、乙二人分别从A、B两地同时出发，相向而行，出发时他们的速度比是3：2，相遇后，甲提速20%，乙提速30%，当甲到达B地时，乙离A地还有42千米，A、B两地相距多少千米？
<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 + (1/5)</gadget>
<output>6/5 = around 1.2</output>

<gadget id="calculator">3 * (6/5)</gadget>
<output>18/5 = around 3.6</output>

<gadget id="calculator">30 / 100</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">1 + (3/10)</gadget>
<output>13/10 = around 1.3</output>

<gadget id="calculator">2 * (13/10)</gadget>
<output>13/5 = around 2.6</output>

<gadget id="calculator">(18/5) / (13/5)</gadget>
<output>18/13 = around 1.384615</output>

<gadget id="calculator">1 / (18/13)</gadget>
<output>13/18 = around 0.722222</output>

<gadget id="calculator">(2/5) * (13/18)</gadget>
<output>13/45 = around 0.288889</output>

<gadget id="calculator">(3/5) - (13/45)</gadget>
<output>14/45 = around 0.311111</output>

<gadget id="calculator">42 / (14/45)</gadget>
<output>135</output>

<result>135</result>