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Given two numbers A and B which define a range, where A <= B. Find the count of total numbers in the given range [A … B] divisible by M**.**

**Example 1:**

**Input**: A = 6, B = 15, M = 3
**Output:** 4
**Explanation**: 6, 9, 12, 15 are divisible
by 3.Hence answer is 4.

**Example 2:**

**Input: **A = 25, B = 100, M = 30
**Output: **3
**Explanation**: 30, 60, 90 are divisible
by 30.Hence answer is 3.

**Your Task: **

You dont need to read input or print anything. Complete the function **countDivisibles() **which takes n as input parameter and returns the count of total numbers in the given range [A … B] divisible by M.

**Expected Time Complexity:** O(1)

**Expected Auxiliary Space:** O(1)

**Constraints:**

1<= A, B, M <=10^{6}

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Count numbers divisible by M

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