We look at the division of 20613691 by 373 
The aim is to understand the frequency of 373 in 20613691.

Advancing to step 1:
2 divided by 373 is 0 with a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Append the next digit (0) from the dividend to 2 and continue with: 20 / 373

Let's proceed to step 2:
373 goes into 20 0 times with a remainder of 20.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 20 after subtracting 0 from 20.
Fetch the next digit (6) from the dividend, attach it to 20 and continue: 206 / 373

Step 3:
When dividing 206 by 373, we get 0 with a remainder of 206.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 206 after subtracting 0 from 206.
Fetch the next digit (1) from the dividend, attach it to 206 and continue: 2061 / 373

Step 4:
373 can be fit into 2061 5 times, resulting in a remainder of 196.
The next digit of our result is 5. 
Result so far: 5.0
Subtract 1865 from 2061 to get 196.
Take the next digit (3) from the dividend and append it to 196, then repeat: 1963 / 373

Advancing to step 5:
1963 divided by 373 is 5 with a remainder of 98.
Use 5 as the next digit of our solution. 
Result so far: 55.0
The remainder is 98 after subtracting 1865 from 1963.
Include the next digit (6) from the dividend after 98, then repeat: 986 / 373

Going ahead to step 6:
373 goes into 986 2 times with a remainder of 240.
Use 2 as the next digit of our solution. 
Result so far: 552.0
Subtracting 746 from 986 leaves us with 240.
Bring next digit (9) of the dividend behind the 240 and repeat the process: 2409 / 373

Advancing to step 7:
373 can be fit into 2409 6 times, resulting in a remainder of 171.
Record the quotient 6 as the next digit in the result. 
Result so far: 5526.0
If we subtract 2238 from 2409, we get 171.
Bring next digit (1) of the dividend behind the 171 and repeat the process: 1711 / 373

Going ahead to step 8:
1711 divided by 373 is 4 with a remainder of 219.
Use 4 as the next digit of our solution. 
Result so far: 55264.0
Deduct 1492 from 1711 and we're left with 219.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2190, and continue the process.

Advancing to step 9:
When dividing 2190 by 373, we get 5 with a remainder of 325.
Use 5 as the next digit of our solution. 
Result so far: 55264.5
The remainder is 325 after subtracting 1865 from 2190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3250, and continue the process.

On to step 10:
3250 divided by 373 is 8 with a remainder of 266.
Write down 8 as next digit of the result. 
Result so far: 55264.58
Deduct 2984 from 3250 and we're left with 266.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2660, and continue the process.

Advancing to step 11:
373 can be fit into 2660 7 times, resulting in a remainder of 49.
Write down 7 as next digit of the result. 
Result so far: 55264.587
The remainder is 49 after subtracting 2611 from 2660.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

Advancing to step 12:
When dividing 490 by 373, we get 1 with a remainder of 117.
Use 1 as the next digit of our solution. 
Result so far: 55264.5871
Subtracting 373 from 490 leaves us with 117.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1170, and continue the process.

Going ahead to step 13:
When dividing 1170 by 373, we get 3 with a remainder of 51.
Write down 3 as next digit of the result. 
Result so far: 55264.58713
Deduct 1119 from 1170 and we're left with 51.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

Moving on to step 14:
When dividing 510 by 373, we get 1 with a remainder of 137.
The next digit of our result is 1. 
Result so far: 55264.587131
Subtracting 373 from 510 leaves us with 137.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1370, and continue the process.

On to step 15:
The number 373 fits into 1370 3 times, leaving a remainder of 251.
The next digit of our result is 3. 
Result so far: 55264.5871313
The remainder is 251 after subtracting 1119 from 1370.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2510, and continue the process.

Let's proceed to step 16:
373 can be fit into 2510 6 times, resulting in a remainder of 272.
Put 6 as the next digit of the answer. 
Result so far: 55264.58713136
Subtracting 2238 from 2510 leaves us with 272.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2720, and continue the process.

After the division, we end up with 55264.58713136 and a remainder of 2.72e-07.