要计算百公里油耗，可以使用以下公式： 百公里油耗 = （加油量 / 行驶里程） * 100 在这个例子中，加了20升油，跑了230公里： 百公里油耗 = （20升 / 230公里） * 100 = 8.7升/百公里 所以，百公里油耗是8.7升。

Fill it up to get a more accurate calculation, but I think it's pointless to calculate this. What difference does it make anyway?

Fill it up, calculate it accurately.

20 divided by 230 is a little over eight.