Implement 7 with recursion!

def calc(n,count): 
    # print(n,count) 
    if count <8: 
        return calc(n*count,count+1) 
    else: 
        return n 
b = calc(1,2) 
print(b) 

reuse calc function, and pass the result of each calculation into the calc function 
to get the result 5040