Two people, A and B, drive toward each other from two places at the same time. A is 40 kilometers per hour, and B is 50 kilometers per hour. In 2 hours, the distance between the two cars is 40 kilometers. Find the distance between the two places.
甲乙两人同时从两地相向而行，甲每小时40千米，乙每小时50千米，2小时候两车相距40千米，求两地的距离．
<gadget id="calculator">40 * 2</gadget>
<output>80</output>

<gadget id="calculator">50 * 2</gadget>
<output>100</output>

<gadget id="calculator">80 + 100 + 40</gadget>
<output>220</output>

<result>220</result>