do by

British  

verb

1. (intr, preposition) to treat in the manner specified

   employers do well by hard working employees

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do by Idioms  

1. Behave with respect to, treat, as in John was determined to do well by his children. This idiom was first recorded about 1175.

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Example Sentences

We cannot verify their accounts, but they are similar to the hundreds of interviews done by human rights groups over the past two decades.

From BBC

Over the last few years a lot of legal work has been done by local authorities and the National Parks to make the path an official right of way.

From BBC

The media landscape has fractured — back then newspapers set the political agenda, fewer than half of voters were online and streaming was something mostly done by water.

From Los Angeles Times

Shorter lines would actually relieve pressure to get a funding deal done by taking away a major pain point.

From Salon

This is done by a first-past-the-post system of voting where the candidate with the most votes wins.

From BBC