77957838 divided by 821 
The aim is to understand the frequency of 821 in 77957838.

Step 1:
821 goes into 7 0 times with a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Append the next digit (7) from the dividend to 7 and continue with: 77 / 821

Step 2:
The number 821 fits into 77 0 times, leaving a remainder of 77.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 77 and we're left with 77.
Take the next digit (9) from the dividend and append it to 77, then repeat: 779 / 821

Step 3:
821 goes into 779 0 times with a remainder of 779.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 779 after subtracting 0 from 779.
Bring next digit (5) of the dividend behind the 779 and repeat the process: 7795 / 821

Let's proceed to step 4:
The number 821 fits into 7795 9 times, leaving a remainder of 406.
Put 9 as the next digit of the answer. 
Result so far: 9.0
Subtracting 7389 from 7795 leaves us with 406.
Grab the next digit (7) from the dividend, add it to 406, then carry on: 4067 / 821

Going ahead to step 5:
4067 divided by 821 is 4 with a remainder of 783.
Put 4 as the next digit of the answer. 
Result so far: 94.0
If we subtract 3284 from 4067, we get 783.
Bring next digit (8) of the dividend behind the 783 and repeat the process: 7838 / 821

Moving on to step 6:
821 goes into 7838 9 times with a remainder of 449.
Put 9 as the next digit of the answer. 
Result so far: 949.0
Subtracting 7389 from 7838 leaves us with 449.
Append the next digit (3) from the dividend to 449 and continue with: 4493 / 821

Going ahead to step 7:
When dividing 4493 by 821, we get 5 with a remainder of 388.
Use 5 as the next digit of our solution. 
Result so far: 9495.0
If we take 4105 away from 4493, we end up with 388.
Append the next digit (8) from the dividend to 388 and continue with: 3888 / 821

Moving on to step 8:
The number 821 fits into 3888 4 times, leaving a remainder of 604.
The next digit of our result is 4. 
Result so far: 94954.0
Deduct 3284 from 3888 and we're left with 604.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6040, and continue the process.

On to step 9:
6040 divided by 821 is 7 with a remainder of 293.
Record the quotient 7 as the next digit in the result. 
Result so far: 94954.7
Subtract 5747 from 6040 to get 293.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2930, and continue the process.

On to step 10:
2930 divided by 821 is 3 with a remainder of 467.
Record the quotient 3 as the next digit in the result. 
Result so far: 94954.73
Subtract 2463 from 2930 to get 467.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4670, and continue the process.

Let's proceed to step 11:
The number 821 fits into 4670 5 times, leaving a remainder of 565.
Use 5 as the next digit of our solution. 
Result so far: 94954.735
Deduct 4105 from 4670 and we're left with 565.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5650, and continue the process.

Advancing to step 12:
5650 divided by 821 is 6 with a remainder of 724.
The next digit of our result is 6. 
Result so far: 94954.7356
If we subtract 4926 from 5650, we get 724.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7240, and continue the process.

Moving on to step 13:
If we divide 7240 by 821, we get 8 and a remainder of 672.
Record the quotient 8 as the next digit in the result. 
Result so far: 94954.73568
If we take 6568 away from 7240, we end up with 672.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6720, and continue the process.

Let's proceed to step 14:
821 goes into 6720 8 times with a remainder of 152.
Write down 8 as next digit of the result. 
Result so far: 94954.735688
Deduct 6568 from 6720 and we're left with 152.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1520, and continue the process.

The quotient of the division is 94954.735688, and the remainder is 1.52e-05.