Question: In Scheme, define a tail-recursive function digits->number that takes a list of digits and returns the number represented by those digits. For example, > (digits->number

In Scheme, define a tail-recursive function digits->number that takes a list of digits and returns the number represented by those digits. For example,

> (digits->number (7 6 1 5)) 7615

Any helper functions you need should be defined within the body of digits->number using letrec.

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