and B start from A and B at the same time and drive toward each other. The speed ratio of A and B is 3:2. When A travels the whole distance (1/5), B is still 220 meters away from the midpoint. Ask, how many meters is the distance between AB and AB?
甲乙两人同时从A，B两地出发相向而行，甲乙两人的速度之比是3：2，当甲行了全程的(1/5)时，乙车离中点还有220米．问，AB两地相距多少米？
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

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

<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">(1/5) * (2/3)</gadget>
<output>2/15 = around 0.133333</output>

<gadget id="calculator">(1/2) - (2/15)</gadget>
<output>11/30 = around 0.366667</output>

<gadget id="calculator">220 / (11/30)</gadget>
<output>600</output>

<result>600</result>