Learn Russian: К вечеру я понял, что переплатил за телефон. - By evening I realized that I had overpaid for the phone.

The prefix пере- added to the root verb платить (to pay) indicates an excessive action. Therefore, переплатить means "to overpay" or "to pay too much." It's a perfective verb showing the completed result of this excessive action.

Why does Russian use the simple past переплатил when the English translation uses the past perfect "had overpaid"?

Russian doesn't have a distinct past perfect tense (like "had done" in English). Instead, it relies on context and the perfective aspect to show the sequence of events. Both понял (realized) and переплатил (overpaid) are perfective past tense, but logic tells us the overpaying happened before the realization.

Why is it К вечеру instead of something like До вечера?

The preposition к followed by the dative case (вечеру) is used to mean "by" a certain time. It shows that the realization happened as evening approached or by the time evening arrived. If you used до вечера (until evening), it would incorrectly imply a continuous action that lasted up until the evening and then stopped.

Why do we use за + accusative (за телефон) to say "for the phone"?