637445 divided by 51 
The aim is to understand the frequency of 51 in 637445.

Let's proceed to step 1:
The number 51 fits into 6 0 times, leaving a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Fetch the next digit (3) from the dividend, attach it to 6 and continue: 63 / 51

Let's proceed to step 2:
51 can be fit into 63 1 times, resulting in a remainder of 12.
The next digit of our result is 1. 
Result so far: 1.0
Subtracting 51 from 63 leaves us with 12.
Take the next digit (7) from the dividend and append it to 12, then repeat: 127 / 51

Advancing to step 3:
51 can be fit into 127 2 times, resulting in a remainder of 25.
The next digit of our result is 2. 
Result so far: 12.0
Subtract 102 from 127 to get 25.
Grab the next digit (4) from the dividend, add it to 25, then carry on: 254 / 51

Going ahead to step 4:
When dividing 254 by 51, we get 4 with a remainder of 50.
Use 4 as the next digit of our solution. 
Result so far: 124.0
If we take 204 away from 254, we end up with 50.
Fetch the next digit (4) from the dividend, attach it to 50 and continue: 504 / 51

Step 5:
If we divide 504 by 51, we get 9 and a remainder of 45.
The number 9 becomes the next digit in our result. 
Result so far: 1249.0
Subtracting 459 from 504 leaves us with 45.
Bring next digit (5) of the dividend behind the 45 and repeat the process: 455 / 51

Moving on to step 6:
When dividing 455 by 51, we get 8 with a remainder of 47.
Put 8 as the next digit of the answer. 
Result so far: 12498.0
Deduct 408 from 455 and we're left with 47.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

Step 7:
51 goes into 470 9 times with a remainder of 11.
Put 9 as the next digit of the answer. 
Result so far: 12498.9
Subtract 459 from 470 to get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

On to step 8:
51 goes into 110 2 times with a remainder of 8.
Use 2 as the next digit of our solution. 
Result so far: 12498.92
Deduct 102 from 110 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Going ahead to step 9:
80 divided by 51 is 1 with a remainder of 29.
The next digit of our result is 1. 
Result so far: 12498.921
If we subtract 51 from 80, we get 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Going ahead to step 10:
51 can be fit into 290 5 times, resulting in a remainder of 35.
Use 5 as the next digit of our solution. 
Result so far: 12498.9215
The remainder is 35 after subtracting 255 from 290.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Advancing to step 11:
If we divide 350 by 51, we get 6 and a remainder of 44.
Put 6 as the next digit of the answer. 
Result so far: 12498.92156
If we subtract 306 from 350, we 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.

Going ahead to step 12:
When dividing 440 by 51, we get 8 with a remainder of 32.
The next digit of our result is 8. 
Result so far: 12498.921568
If we take 408 away from 440, we end up with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Advancing to step 13:
The number 51 fits into 320 6 times, leaving a remainder of 14.
The next digit of our result is 6. 
Result so far: 12498.9215686
Subtract 306 from 320 to get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Step 14:
The number 51 fits into 140 2 times, leaving a remainder of 38.
The number 2 becomes the next digit in our result. 
Result so far: 12498.92156862
Subtract 102 from 140 to get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

After the division, we end up with 12498.92156862 and a remainder of 3.8e-08.