The school organized a spring outing. The students set off at a speed of 3500 meters per hour. It took (3/14) hours to visit Qianrengang, and it took (17/20) hours to get out of Qianrengang to the ecological park. Please walk today How many kilometers?
学校组织春游，学生以每小时3500米的速度出发，用了(3/14)小时到达千仞岗参观，从千仞岗出来到达生态公园共用了(17/20)小时，求今天共走了多少千米？
<gadget id="calculator">3 / 14</gadget>
<output>3/14 = around 0.214286</output>

<gadget id="calculator">3_500 * (3/14)</gadget>
<output>750</output>

<gadget id="calculator">17 / 20</gadget>
<output>17/20 = around 0.85</output>

<gadget id="calculator">3_500 * (17/20)</gadget>
<output>2_975</output>

<gadget id="calculator">750 + 2_975</gadget>
<output>3_725</output>

<gadget id="calculator">3_725 / 1_000</gadget>
<output>149/40 = around 3.725</output>

<result>149/40 = around 3.725</result>