math_operations

def math_operations(*args, **kwargs):
    from collections import deque

    args = deque(args)
    while args:
        kwargs['a'] += args.popleft()
        if args:
            kwargs['s'] -= args.popleft()
        else:
            break
        if args and args[0] != 0:
            kwargs['d'] /= args.popleft()
        elif args:
            args.popleft()
        else:
            break
        if args:
            kwargs['m'] *= args.popleft()
    return kwargs


print(math_operations(2, 12, 0, -3, 6, -20, -11, a=1, s=7, d=33, m=15))