input: Write a python function to calculate the sum of all numbers divisible by 10 in a given range.
  assert sum_divisible_by_10(50, 200) == 1950
  assert sum_divisible_by_10(10, 100) == 550
  assert sum_divisible_by_10(30, 70) == 150
output: def sum_divisible_by_10(start, end):
      return sum(x for x in range(start, end + 1) if x % 10 == 0)