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(define (mult a b) (iter 0 a b)) (define (iter a b n) (cond ((= n 2) (+ a (dbl b))) ((even? n) (iter a (dbl b) (/ n 2))) (else (iter (+ a b) b (- n 1))))) (define (dbl x) (* x 2)) (define (halve x) (/ x 2)) (mult 4 700)

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