A and B walk towards each other from two places 6990 meters apart in the morning. A walks 80 meters per minute, and B walks 70 meters per minute. B meets an acquaintance on the way, and the delay is 3 minutes. When did they meet?
甲、乙两个于上午从相距6990米的两地相对走来，甲每分钟走80米，乙每分钟走70米，乙在途中遇到熟人，耽误了3分钟，他们在什么时间相遇？
<gadget id="calculator">80 * 3</gadget>
<output>240</output>

<gadget id="calculator">6_990 - 240</gadget>
<output>6_750</output>

<gadget id="calculator">80 + 70</gadget>
<output>150</output>

<gadget id="calculator">6_750 / 150</gadget>
<output>45</output>

<gadget id="calculator">45 + 3</gadget>
<output>48</output>

<result>48</result>