We look at the division of 83869410 by 73 
The aim is to understand the frequency of 73 in 83869410.

Advancing to step 1:
If we divide 8 by 73, we get 0 and a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Fetch the next digit (3) from the dividend, attach it to 8 and continue: 83 / 73

Step 2:
73 goes into 83 1 times with a remainder of 10.
The next digit of our result is 1. 
Result so far: 1.0
If we take 73 away from 83, we end up with 10.
Grab the next digit (8) from the dividend, add it to 10, then carry on: 108 / 73

Moving on to step 3:
When dividing 108 by 73, we get 1 with a remainder of 35.
Write down 1 as next digit of the result. 
Result so far: 11.0
If we take 73 away from 108, we end up with 35.
Grab the next digit (6) from the dividend, add it to 35, then carry on: 356 / 73

Advancing to step 4:
When dividing 356 by 73, we get 4 with a remainder of 64.
Record the quotient 4 as the next digit in the result. 
Result so far: 114.0
Subtracting 292 from 356 leaves us with 64.
Take the next digit (9) from the dividend and append it to 64, then repeat: 649 / 73

Going ahead to step 5:
73 can be fit into 649 8 times, resulting in a remainder of 65.
Record the quotient 8 as the next digit in the result. 
Result so far: 1148.0
If we subtract 584 from 649, we get 65.
Append the next digit (4) from the dividend to 65 and continue with: 654 / 73

On to step 6:
If we divide 654 by 73, we get 8 and a remainder of 70.
Put 8 as the next digit of the answer. 
Result so far: 11488.0
Subtract 584 from 654 to get 70.
Bring next digit (1) of the dividend behind the 70 and repeat the process: 701 / 73

Advancing to step 7:
701 divided by 73 is 9 with a remainder of 44.
Record the quotient 9 as the next digit in the result. 
Result so far: 114889.0
Deduct 657 from 701 and we're left with 44.
Grab the next digit (0) from the dividend, add it to 44, then carry on: 440 / 73

Going ahead to step 8:
440 divided by 73 is 6 with a remainder of 2.
The next digit of our result is 6. 
Result so far: 1148896.0
The remainder is 2 after subtracting 438 from 440.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Moving on to step 9:
When dividing 20 by 73, we get 0 with a remainder of 20.
Use 0 as the next digit of our solution. 
Result so far: 1148896.0
If we take 0 away from 20, we end up 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.

Step 10:
When dividing 200 by 73, we get 2 with a remainder of 54.
The number 2 becomes the next digit in our result. 
Result so far: 1148896.02
If we take 146 away from 200, we end up with 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Advancing to step 11:
When dividing 540 by 73, we get 7 with a remainder of 29.
Write down 7 as next digit of the result. 
Result so far: 1148896.027
Subtracting 511 from 540 leaves us with 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Advancing to step 12:
73 can be fit into 290 3 times, resulting in a remainder of 71.
Record the quotient 3 as the next digit in the result. 
Result so far: 1148896.0273
The remainder is 71 after subtracting 219 from 290.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

Advancing to step 13:
710 divided by 73 is 9 with a remainder of 53.
Write down 9 as next digit of the result. 
Result so far: 1148896.02739
The remainder is 53 after subtracting 657 from 710.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Going ahead to step 14:
The number 73 fits into 530 7 times, leaving a remainder of 19.
Write down 7 as next digit of the result. 
Result so far: 1148896.027397
The remainder is 19 after subtracting 511 from 530.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

On to step 15:
73 can be fit into 190 2 times, resulting in a remainder of 44.
The next digit of our result is 2. 
Result so far: 1148896.0273972
Subtract 146 from 190 to get 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Let's proceed to step 16:
73 goes into 440 6 times with a remainder of 2.
The next digit of our result is 6. 
Result so far: 1148896.02739726
If we subtract 438 from 440, we 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.

After the division, we end up with 1148896.02739726 and a remainder of 2e-09.