77971646 ÷ 431 
We want to divide 77971646 by 431.

Step 1:
The number 431 fits into 7 0 times, leaving a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Fetch the next digit (7) from the dividend, attach it to 7 and continue: 77 / 431

Advancing to step 2:
The number 431 fits into 77 0 times, leaving a remainder of 77.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 77, we end up with 77.
Append the next digit (9) from the dividend to 77 and continue with: 779 / 431

Let's proceed to step 3:
431 can be fit into 779 1 times, resulting in a remainder of 348.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we take 431 away from 779, we end up with 348.
Grab the next digit (7) from the dividend, add it to 348, then carry on: 3487 / 431

Going ahead to step 4:
431 can be fit into 3487 8 times, resulting in a remainder of 39.
Record the quotient 8 as the next digit in the result. 
Result so far: 18.0
If we subtract 3448 from 3487, we get 39.
Fetch the next digit (1) from the dividend, attach it to 39 and continue: 391 / 431

Let's proceed to step 5:
431 can be fit into 391 0 times, resulting in a remainder of 391.
Put 0 as the next digit of the answer. 
Result so far: 180.0
Subtracting 0 from 391 leaves us with 391.
Take the next digit (6) from the dividend and append it to 391, then repeat: 3916 / 431

Moving on to step 6:
431 goes into 3916 9 times with a remainder of 37.
Put 9 as the next digit of the answer. 
Result so far: 1809.0
If we take 3879 away from 3916, we end up with 37.
Bring next digit (4) of the dividend behind the 37 and repeat the process: 374 / 431

Let's proceed to step 7:
When dividing 374 by 431, we get 0 with a remainder of 374.
Use 0 as the next digit of our solution. 
Result so far: 18090.0
The remainder is 374 after subtracting 0 from 374.
Take the next digit (6) from the dividend and append it to 374, then repeat: 3746 / 431

Step 8:
When dividing 3746 by 431, we get 8 with a remainder of 298.
Write down 8 as next digit of the result. 
Result so far: 180908.0
If we subtract 3448 from 3746, we get 298.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2980, and continue the process.

Moving on to step 9:
431 can be fit into 2980 6 times, resulting in a remainder of 394.
The number 6 becomes the next digit in our result. 
Result so far: 180908.6
Deduct 2586 from 2980 and we're left with 394.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3940, and continue the process.

Let's proceed to step 10:
If we divide 3940 by 431, we get 9 and a remainder of 61.
Write down 9 as next digit of the result. 
Result so far: 180908.69
Subtracting 3879 from 3940 leaves us with 61.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

Let's proceed to step 11:
When dividing 610 by 431, we get 1 with a remainder of 179.
Write down 1 as next digit of the result. 
Result so far: 180908.691
Subtract 431 from 610 to get 179.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1790, and continue the process.

Going ahead to step 12:
If we divide 1790 by 431, we get 4 and a remainder of 66.
The number 4 becomes the next digit in our result. 
Result so far: 180908.6914
Subtracting 1724 from 1790 leaves us with 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Going ahead to step 13:
431 goes into 660 1 times with a remainder of 229.
Record the quotient 1 as the next digit in the result. 
Result so far: 180908.69141
If we subtract 431 from 660, we get 229.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2290, and continue the process.

Let's proceed to step 14:
2290 divided by 431 is 5 with a remainder of 135.
The next digit of our result is 5. 
Result so far: 180908.691415
If we subtract 2155 from 2290, we get 135.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1350, and continue the process.

Let's proceed to step 15:
If we divide 1350 by 431, we get 3 and a remainder of 57.
Write down 3 as next digit of the result. 
Result so far: 180908.6914153
If we subtract 1293 from 1350, we get 57.
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 16:
431 goes into 570 1 times with a remainder of 139.
The next digit of our result is 1. 
Result so far: 180908.69141531
If we take 431 away from 570, we end up with 139.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1390, and continue the process.

After the division, we end up with 180908.69141531 and a remainder of 1.39e-07.