In the morning, Wang Gang and his grandfather went for a run by the lake. Grandpa’s speed was Wang Gang’s (5/8). The two started running from the same place with their backs facing each other. When they met for the first time, Wang Gang’s distance was faster than the entire Half of the lake is 210 meters longer, so how many meters did Grandpa run at this time?
早晨，王刚和爷爷一起去湖边跑步，爷爷的速度是王刚速度的(5/8)，爷俩儿从同一地点同时背向开始跑步，两人第一次相遇时，王刚跑的路程比整个湖一周的一半还多210米，那么此时爷爷跑了多少米？
<gadget id="calculator">5 + 8</gadget>
<output>13</output>

<gadget id="calculator">8 / 13</gadget>
<output>8/13 = around 0.615385</output>

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">(8/13) - (1/2)</gadget>
<output>3/26 = around 0.115385</output>

<gadget id="calculator">210 / (3/26)</gadget>
<output>1_820</output>

<gadget id="calculator">5 / 13</gadget>
<output>5/13 = around 0.384615</output>

<gadget id="calculator">1_820 * (5/13)</gadget>
<output>700</output>

<result>700</result>