The front wheel rotates 40 more times than the rear wheel at a distance of 720 meters. If the circumference of the rear wheel is 2 meters, find the circumference of the front wheel.
前轮在720米的距离里比后轮多转40周，如果后轮的周长是2米，求前轮的周长．
<gadget id="calculator">720 / 2</gadget>
<output>360</output>

<gadget id="calculator">360 + 40</gadget>
<output>400</output>

<gadget id="calculator">720 / 400</gadget>
<output>9/5 = around 1.8</output>

<result>9/5 = around 1.8</result>