Let's divide 18123136 by 7
We're looking to find how many times 7 goes into 18123136.

Going ahead to step 1:
When dividing 1 by 7, we get 0 with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Include the next digit (8) from the dividend after 1, then repeat: 18 / 7

On to step 2:
When dividing 18 by 7, we get 2 with a remainder of 4.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
The remainder is 4 after subtracting 14 from 18.
Include the next digit (1) from the dividend after 4, then repeat: 41 / 7

Step 3:
41 divided by 7 is 5 with a remainder of 6.
The next digit of our result is 5. 
Result so far: 25.0
Subtracting 35 from 41 leaves us with 6.
Include the next digit (2) from the dividend after 6, then repeat: 62 / 7

Moving on to step 4:
62 divided by 7 is 8 with a remainder of 6.
The number 8 becomes the next digit in our result. 
Result so far: 258.0
Deduct 56 from 62 and we're left with 6.
Take the next digit (3) from the dividend and append it to 6, then repeat: 63 / 7

Advancing to step 5:
When dividing 63 by 7, we get 9 with a remainder of 0.
Write down 9 as next digit of the result. 
Result so far: 2589.0
Subtracting 63 from 63 leaves us with 0.
Bring next digit (1) of the dividend behind the 0 and repeat the process: 1 / 7

Going ahead to step 6:
The number 7 fits into 1 0 times, leaving a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 25890.0
If we take 0 away from 1, we end up with 1.
Take the next digit (3) from the dividend and append it to 1, then repeat: 13 / 7

Advancing to step 7:
The number 7 fits into 13 1 times, leaving a remainder of 6.
Record the quotient 1 as the next digit in the result. 
Result so far: 258901.0
Subtracting 7 from 13 leaves us with 6.
Grab the next digit (6) from the dividend, add it to 6, then carry on: 66 / 7

Let's proceed to step 8:
7 goes into 66 9 times with a remainder of 3.
Use 9 as the next digit of our solution. 
Result so far: 2589019.0
If we subtract 63 from 66, we get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Advancing to step 9:
30 divided by 7 is 4 with a remainder of 2.
Use 4 as the next digit of our solution. 
Result so far: 2589019.4
Subtract 28 from 30 to get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Advancing to step 10:
The number 7 fits into 20 2 times, leaving a remainder of 6.
Record the quotient 2 as the next digit in the result. 
Result so far: 2589019.42
If we subtract 14 from 20, we get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

On to step 11:
7 can be fit into 60 8 times, resulting in a remainder of 4.
Use 8 as the next digit of our solution. 
Result so far: 2589019.428
Subtracting 56 from 60 leaves us with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Let's proceed to step 12:
7 goes into 40 5 times with a remainder of 5.
Put 5 as the next digit of the answer. 
Result so far: 2589019.4285
Subtracting 35 from 40 leaves us with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Moving on to step 13:
When dividing 50 by 7, we get 7 with a remainder of 1.
Use 7 as the next digit of our solution. 
Result so far: 2589019.42857
If we take 49 away from 50, we end up with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Let's proceed to step 14:
If we divide 10 by 7, we get 1 and a remainder of 3.
Write down 1 as next digit of the result. 
Result so far: 2589019.428571
If we take 7 away from 10, we end up with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Moving on to step 15:
7 can be fit into 30 4 times, resulting in a remainder of 2.
Write down 4 as next digit of the result. 
Result so far: 2589019.4285714
Deduct 28 from 30 and we're left with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Step 16:
7 goes into 20 2 times with a remainder of 6.
Write down 2 as next digit of the result. 
Result so far: 2589019.42857142
Subtracting 14 from 20 leaves us with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

The final outcome is 2589019.42857142, with a leftover of 6e-09.