A walks 80 meters per minute, and B walks 60 meters per minute. B starts 3 minutes after A starts, and walks towards each other in a straight line. After another 10 minutes, the two meet. How many meters are they initially separated?
甲每分钟走80米，乙每分钟走60米，甲出发3分钟后乙才出发，分别沿直线向对方走去，又过了10分钟后两人相遇，求两人最初相距多少米？
<gadget id="calculator">80 * 3</gadget>
<output>240</output>

<gadget id="calculator">60 + 80</gadget>
<output>140</output>

<gadget id="calculator">140 * 10</gadget>
<output>1_400</output>

<gadget id="calculator">240 + 1_400</gadget>
<output>1_640</output>

<result>1_640</result>