make up the numbers

cannot make it

Cannot reach satisfactory or expected standards or do something competently; describes someone in a hopeless situation.

crunch numbers

To figure; to do the math.

do numbers

To be popular, as measured by engagement or sales metrics.

doctors make the worst patients

It is difficult to advise people on subjects that they are experts on.

enough to make a cat laugh

Very outlandish or outrageous.

enough to make the angels weep

Something so distressing that it causes one to lose hope and faith.

file off the serial numbers

To alter identifiable details in a creative work in order to conceal its origin.

fine feathers make fine birds

Something that appears beautiful or good is by definition beautiful or good.