A bicycle has 48 teeth on the front gear and 20 teeth on the rear gear, and the diameter of the wheel is 70 cm. When the pedals make one revolution, how many meters does the bike travel? (results are kept as integers)
一辆自行车，前齿轮的齿数是48个，后齿轮的齿数是20个，车轮直径为70cm，脚踏蹬一圈，自行车前进了多少米？(结果保留整数)
<gadget id="calculator">3.14 * 70</gadget>
<output>219.8</output>

<result>219.8</result>