We look at the division of 972123 by 77 
We want to figure out the number of times 972123 can be divided by 77.

Going ahead to step 1:
77 goes into 9 0 times with a remainder of 9.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 9 after subtracting 0 from 9.
Grab the next digit (7) from the dividend, add it to 9, then carry on: 97 / 77

Step 2:
If we divide 97 by 77, we get 1 and a remainder of 20.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
The remainder is 20 after subtracting 77 from 97.
Bring next digit (2) of the dividend behind the 20 and repeat the process: 202 / 77

Moving on to step 3:
77 goes into 202 2 times with a remainder of 48.
Write down 2 as next digit of the result. 
Result so far: 12.0
If we take 154 away from 202, we end up with 48.
Grab the next digit (1) from the dividend, add it to 48, then carry on: 481 / 77

Advancing to step 4:
The number 77 fits into 481 6 times, leaving a remainder of 19.
The next digit of our result is 6. 
Result so far: 126.0
The remainder is 19 after subtracting 462 from 481.
Bring next digit (2) of the dividend behind the 19 and repeat the process: 192 / 77

On to step 5:
When dividing 192 by 77, we get 2 with a remainder of 38.
Put 2 as the next digit of the answer. 
Result so far: 1262.0
Subtract 154 from 192 to get 38.
Bring next digit (3) of the dividend behind the 38 and repeat the process: 383 / 77

Advancing to step 6:
If we divide 383 by 77, we get 4 and a remainder of 75.
Put 4 as the next digit of the answer. 
Result so far: 12624.0
Subtracting 308 from 383 leaves us with 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Advancing to step 7:
The number 77 fits into 750 9 times, leaving a remainder of 57.
The next digit of our result is 9. 
Result so far: 12624.9
Deduct 693 from 750 and we're left with 57.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

Step 8:
When dividing 570 by 77, we get 7 with a remainder of 31.
Put 7 as the next digit of the answer. 
Result so far: 12624.97
If we take 539 away from 570, we end up 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.

Advancing to step 9:
When dividing 310 by 77, we get 4 with a remainder of 2.
Record the quotient 4 as the next digit in the result. 
Result so far: 12624.974
Subtract 308 from 310 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:
If we divide 20 by 77, we get 0 and a remainder of 20.
The next digit of our result is 0. 
Result so far: 12624.974
Subtracting 0 from 20 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Moving on to step 11:
The number 77 fits into 200 2 times, leaving a remainder of 46.
The next digit of our result is 2. 
Result so far: 12624.97402
The remainder is 46 after subtracting 154 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Moving on to step 12:
If we divide 460 by 77, we get 5 and a remainder of 75.
Record the quotient 5 as the next digit in the result. 
Result so far: 12624.974025
The remainder is 75 after subtracting 385 from 460.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Advancing to step 13:
750 divided by 77 is 9 with a remainder of 57.
Put 9 as the next digit of the answer. 
Result so far: 12624.9740259
The remainder is 57 after subtracting 693 from 750.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

Moving on to step 14:
When dividing 570 by 77, we get 7 with a remainder of 31.
Use 7 as the next digit of our solution. 
Result so far: 12624.97402597
Subtracting 539 from 570 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.

In conclusion, the division gives 12624.97402597 with a balance of 3.1e-08.