Know the Age

Can you find the ages of a son, father and grandfather based on the following facts?
The sum of the ages of grandfather, father and son is 140 years.
The age of the son in months is the same as the grandfather in years.
The age of the son in days is the same as the father in weeks.




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Using Only Five 5's and any mathematical operator make sum as 37

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0 0 0 = 6
1 1 1 = 6
2 2 2 = 6
3 3 3 = 6
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6 6 6 = 6
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You can use any mathematical symbols in the space provided to make all above algebraic expressions true.

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There is a cryptic organization called Cicada 3301 that posts challenging puzzles online, possibly to recruit codebreakers and linguists.