Concept:To make 207 divisible by 17, we must add a number that lands on the next multiple of 17.Explanation:First, find the multiple of 17 just below 207.Since 17×12=204, we have 204<207.So 207 is 207−204=3 more than the previous multiple.The next multiple is 17×13=221.Thus, the least number to add is 221−207=14.Answer:14