12618270 ÷ 840 
We're looking to find how many times 840 goes into 12618270.

Moving on to step 1:
840 can be fit into 1 0 times, resulting in a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Grab the next digit (2) from the dividend, add it to 1, then carry on: 12 / 840

Advancing to step 2:
If we divide 12 by 840, we get 0 and a remainder of 12.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 12 leaves us with 12.
Grab the next digit (6) from the dividend, add it to 12, then carry on: 126 / 840

Advancing to step 3:
840 goes into 126 0 times with a remainder of 126.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 126 and we're left with 126.
Fetch the next digit (1) from the dividend, attach it to 126 and continue: 1261 / 840

Going ahead to step 4:
840 can be fit into 1261 1 times, resulting in a remainder of 421.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtract 840 from 1261 to get 421.
Grab the next digit (8) from the dividend, add it to 421, then carry on: 4218 / 840

Going ahead to step 5:
840 can be fit into 4218 5 times, resulting in a remainder of 18.
Use 5 as the next digit of our solution. 
Result so far: 15.0
The remainder is 18 after subtracting 4200 from 4218.
Fetch the next digit (2) from the dividend, attach it to 18 and continue: 182 / 840

Step 6:
182 divided by 840 is 0 with a remainder of 182.
The next digit of our result is 0. 
Result so far: 150.0
Subtract 0 from 182 to get 182.
Bring next digit (7) of the dividend behind the 182 and repeat the process: 1827 / 840

Advancing to step 7:
840 can be fit into 1827 2 times, resulting in a remainder of 147.
Use 2 as the next digit of our solution. 
Result so far: 1502.0
The remainder is 147 after subtracting 1680 from 1827.
Append the next digit (0) from the dividend to 147 and continue with: 1470 / 840

Let's proceed to step 8:
When dividing 1470 by 840, we get 1 with a remainder of 630.
The number 1 becomes the next digit in our result. 
Result so far: 15021.0
The remainder is 630 after subtracting 840 from 1470.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6300, and continue the process.

On to step 9:
6300 divided by 840 is 7 with a remainder of 420.
The next digit of our result is 7. 
Result so far: 15021.7
If we take 5880 away from 6300, we end up with 420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4200, and continue the process.

Advancing to step 10:
4200 divided by 840 is 5 with a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 15021.75
If we subtract 4200 from 4200, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 11:
The number 840 fits into 0 0 times, leaving a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 15021.75
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 12:
840 goes into 0 0 times with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 15021.75
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

In conclusion, the division gives 15021.75 with a balance of 0.0.