Here's how to find the least number to add to 3000 to make it divisible by 19:

1. Divide and Find the Remainder:

* Divide 3000 by 19: 3000 ÷ 19 = 157 with a remainder of 17

2. Subtract the Remainder from the Divisor:

* Subtract the remainder (17) from the divisor (19): 19 - 17 = 2

Answer: You need to add 2 to 3000 to make it exactly divisible by 19.