Two bridges, the first bridge is 8700m long, 600m shorter than the second bridge, how many kilometers are the two bridges in total?
两座大桥，第一座大桥长8700m，比第二座大桥少600m，两座大桥一共多少km？
<gadget id="calculator">8_700 + 600 + 8_700</gadget>
<output>18_000</output>

<gadget id="calculator">18_000 / 1_000</gadget>
<output>18</output>

<result>18</result>