8643952 ÷ 123 
Our goal is to divide 8643952 by 123.

Advancing to step 1:
8 divided by 123 is 0 with a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Take the next digit (6) from the dividend and append it to 8, then repeat: 86 / 123

On to step 2:
When dividing 86 by 123, we get 0 with a remainder of 86.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 86 and we're left with 86.
Fetch the next digit (4) from the dividend, attach it to 86 and continue: 864 / 123

Going ahead to step 3:
The number 123 fits into 864 7 times, leaving a remainder of 3.
The next digit of our result is 7. 
Result so far: 7.0
Subtract 861 from 864 to get 3.
Include the next digit (3) from the dividend after 3, then repeat: 33 / 123

Advancing to step 4:
If we divide 33 by 123, we get 0 and a remainder of 33.
Put 0 as the next digit of the answer. 
Result so far: 70.0
Subtracting 0 from 33 leaves us with 33.
Grab the next digit (9) from the dividend, add it to 33, then carry on: 339 / 123

Going ahead to step 5:
If we divide 339 by 123, we get 2 and a remainder of 93.
Use 2 as the next digit of our solution. 
Result so far: 702.0
Subtracting 246 from 339 leaves us with 93.
Include the next digit (5) from the dividend after 93, then repeat: 935 / 123

Advancing to step 6:
123 can be fit into 935 7 times, resulting in a remainder of 74.
The next digit of our result is 7. 
Result so far: 7027.0
Subtract 861 from 935 to get 74.
Grab the next digit (2) from the dividend, add it to 74, then carry on: 742 / 123

Step 7:
742 divided by 123 is 6 with a remainder of 4.
Record the quotient 6 as the next digit in the result. 
Result so far: 70276.0
If we take 738 away from 742, we end up 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.

Moving on to step 8:
123 goes into 40 0 times with a remainder of 40.
Use 0 as the next digit of our solution. 
Result so far: 70276.0
Subtract 0 from 40 to get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Moving on to step 9:
When dividing 400 by 123, we get 3 with a remainder of 31.
Use 3 as the next digit of our solution. 
Result so far: 70276.03
Deduct 369 from 400 and we're left with 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Going ahead to step 10:
When dividing 310 by 123, we get 2 with a remainder of 64.
Put 2 as the next digit of the answer. 
Result so far: 70276.032
Subtracting 246 from 310 leaves us with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Advancing to step 11:
123 goes into 640 5 times with a remainder of 25.
Use 5 as the next digit of our solution. 
Result so far: 70276.0325
If we take 615 away from 640, we end up with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Let's proceed to step 12:
250 divided by 123 is 2 with a remainder of 4.
Put 2 as the next digit of the answer. 
Result so far: 70276.03252
If we take 246 away from 250, we end up 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.

Step 13:
123 can be fit into 40 0 times, resulting in a remainder of 40.
Use 0 as the next digit of our solution. 
Result so far: 70276.03252
Subtract 0 from 40 to get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Advancing to step 14:
When dividing 400 by 123, we get 3 with a remainder of 31.
Put 3 as the next digit of the answer. 
Result so far: 70276.0325203
Subtracting 369 from 400 leaves us with 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Going ahead to step 15:
310 divided by 123 is 2 with a remainder of 64.
The next digit of our result is 2. 
Result so far: 70276.03252032
Subtract 246 from 310 to get 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

The quotient of the division is 70276.03252032, and the remainder is 6.4e-08.