87953901 ÷ 812 
The aim is to understand the frequency of 812 in 87953901.

Step 1:
When dividing 8 by 812, we get 0 with a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Bring next digit (7) of the dividend behind the 8 and repeat the process: 87 / 812

Going ahead to step 2:
The number 812 fits into 87 0 times, leaving a remainder of 87.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 87 and we're left with 87.
Fetch the next digit (9) from the dividend, attach it to 87 and continue: 879 / 812

Going ahead to step 3:
879 divided by 812 is 1 with a remainder of 67.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtract 812 from 879 to get 67.
Fetch the next digit (5) from the dividend, attach it to 67 and continue: 675 / 812

Let's proceed to step 4:
When dividing 675 by 812, we get 0 with a remainder of 675.
The number 0 becomes the next digit in our result. 
Result so far: 10.0
If we take 0 away from 675, we end up with 675.
Append the next digit (3) from the dividend to 675 and continue with: 6753 / 812

Moving on to step 5:
When dividing 6753 by 812, we get 8 with a remainder of 257.
Use 8 as the next digit of our solution. 
Result so far: 108.0
The remainder is 257 after subtracting 6496 from 6753.
Take the next digit (9) from the dividend and append it to 257, then repeat: 2579 / 812

On to step 6:
The number 812 fits into 2579 3 times, leaving a remainder of 143.
The next digit of our result is 3. 
Result so far: 1083.0
If we subtract 2436 from 2579, we get 143.
Take the next digit (0) from the dividend and append it to 143, then repeat: 1430 / 812

Step 7:
When dividing 1430 by 812, we get 1 with a remainder of 618.
Use 1 as the next digit of our solution. 
Result so far: 10831.0
If we subtract 812 from 1430, we get 618.
Append the next digit (1) from the dividend to 618 and continue with: 6181 / 812

Let's proceed to step 8:
6181 divided by 812 is 7 with a remainder of 497.
Use 7 as the next digit of our solution. 
Result so far: 108317.0
If we take 5684 away from 6181, we end up with 497.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4970, and continue the process.

Let's proceed to step 9:
When dividing 4970 by 812, we get 6 with a remainder of 98.
Use 6 as the next digit of our solution. 
Result so far: 108317.6
The remainder is 98 after subtracting 4872 from 4970.
Since there are no more digits in the dividend, we add a zero to the remainder making it 980, and continue the process.

Step 10:
The number 812 fits into 980 1 times, leaving a remainder of 168.
Use 1 as the next digit of our solution. 
Result so far: 108317.61
Subtracting 812 from 980 leaves us with 168.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1680, and continue the process.

Going ahead to step 11:
When dividing 1680 by 812, we get 2 with a remainder of 56.
Record the quotient 2 as the next digit in the result. 
Result so far: 108317.612
Deduct 1624 from 1680 and we're left with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Step 12:
560 divided by 812 is 0 with a remainder of 560.
Write down 0 as next digit of the result. 
Result so far: 108317.612
If we take 0 away from 560, we end up with 560.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5600, and continue the process.

On to step 13:
If we divide 5600 by 812, we get 6 and a remainder of 728.
Write down 6 as next digit of the result. 
Result so far: 108317.61206
The remainder is 728 after subtracting 4872 from 5600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7280, and continue the process.

Step 14:
The number 812 fits into 7280 8 times, leaving a remainder of 784.
The number 8 becomes the next digit in our result. 
Result so far: 108317.612068
Deduct 6496 from 7280 and we're left with 784.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7840, and continue the process.

Step 15:
7840 divided by 812 is 9 with a remainder of 532.
Record the quotient 9 as the next digit in the result. 
Result so far: 108317.6120689
Deduct 7308 from 7840 and we're left with 532.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5320, and continue the process.

Moving on to step 16:
When dividing 5320 by 812, we get 6 with a remainder of 448.
The number 6 becomes the next digit in our result. 
Result so far: 108317.61206896
If we subtract 4872 from 5320, we get 448.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4480, and continue the process.

The final outcome is 108317.61206896, with a leftover of 4.48e-07.