there is a difference between a person trying to solve a 7kyu, i guess, it is not at all a 7 kyu at least needs to be 5 kyu. of course for "dan's" it might be a single line, but the complexity level should be set according to a person most likely to solve it i.e. a newbee.
Nice use of the properties of the divisions, Euclides would be proud of you guys. Simply and clever.
This solution made me a fool
This is not clever, it's best practice. Don't be fooled by the strange votes.
Someone to approve this, too, please?
Thanks, I have fixed it.
typo learnign to learning
Sorry, it should be fixed now!
This complains about a missing div_sum method, when running the test cases.
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Thanks for the approval!
All of the above are now fixed, and more :-)