Can you help with this?

My 9 year old son was doing an online maghs quiz and asked for help, this was the question.

You have six numbers: 123456

Divide a three digit number by a two digit number to give a one digit number answer.

I could not see anything like a logical way to tackle this? Something that he could do in his head, so, I asked him to figure out different ways to solve the problem.

He thought that multiplying the two digit number by the one digit number would be a good way to go and set about doing it that way with a pencil and piece of paper. He very quickly realised that any answer containing a zero, a number above six, or a duplicate of the numbers he was using in his multiplication was incorrect, so went on to the next try. I did not time it but would guess he got the answer in under a minute.

My question is: -

Is there a more logical way of solving this problem?

Thanks for any help..

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