We look at the division of 50021421 by 651 
The aim is to understand the frequency of 651 in 50021421.

Moving on to step 1:
When dividing 5 by 651, we get 0 with a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Fetch the next digit (0) from the dividend, attach it to 5 and continue: 50 / 651

Advancing to step 2:
If we divide 50 by 651, we get 0 and a remainder of 50.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 50 after subtracting 0 from 50.
Grab the next digit (0) from the dividend, add it to 50, then carry on: 500 / 651

Moving on to step 3:
500 divided by 651 is 0 with a remainder of 500.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 500 after subtracting 0 from 500.
Take the next digit (2) from the dividend and append it to 500, then repeat: 5002 / 651

Advancing to step 4:
The number 651 fits into 5002 7 times, leaving a remainder of 445.
The number 7 becomes the next digit in our result. 
Result so far: 7.0
If we subtract 4557 from 5002, we get 445.
Grab the next digit (1) from the dividend, add it to 445, then carry on: 4451 / 651

Let's proceed to step 5:
651 goes into 4451 6 times with a remainder of 545.
Record the quotient 6 as the next digit in the result. 
Result so far: 76.0
If we take 3906 away from 4451, we end up with 545.
Include the next digit (4) from the dividend after 545, then repeat: 5454 / 651

Let's proceed to step 6:
If we divide 5454 by 651, we get 8 and a remainder of 246.
Write down 8 as next digit of the result. 
Result so far: 768.0
If we take 5208 away from 5454, we end up with 246.
Include the next digit (2) from the dividend after 246, then repeat: 2462 / 651

Moving on to step 7:
If we divide 2462 by 651, we get 3 and a remainder of 509.
Use 3 as the next digit of our solution. 
Result so far: 7683.0
If we subtract 1953 from 2462, we get 509.
Bring next digit (1) of the dividend behind the 509 and repeat the process: 5091 / 651

On to step 8:
5091 divided by 651 is 7 with a remainder of 534.
Use 7 as the next digit of our solution. 
Result so far: 76837.0
Subtract 4557 from 5091 to get 534.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5340, and continue the process.

On to step 9:
If we divide 5340 by 651, we get 8 and a remainder of 132.
The next digit of our result is 8. 
Result so far: 76837.8
The remainder is 132 after subtracting 5208 from 5340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1320, and continue the process.

Let's proceed to step 10:
The number 651 fits into 1320 2 times, leaving a remainder of 18.
Use 2 as the next digit of our solution. 
Result so far: 76837.82
If we subtract 1302 from 1320, we get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Step 11:
651 can be fit into 180 0 times, resulting in a remainder of 180.
Record the quotient 0 as the next digit in the result. 
Result so far: 76837.82
Subtract 0 from 180 to get 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1800, and continue the process.

Step 12:
The number 651 fits into 1800 2 times, leaving a remainder of 498.
Put 2 as the next digit of the answer. 
Result so far: 76837.8202
Deduct 1302 from 1800 and we're left with 498.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4980, and continue the process.

Going ahead to step 13:
651 can be fit into 4980 7 times, resulting in a remainder of 423.
Write down 7 as next digit of the result. 
Result so far: 76837.82027
The remainder is 423 after subtracting 4557 from 4980.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4230, and continue the process.

On to step 14:
When dividing 4230 by 651, we get 6 with a remainder of 324.
Put 6 as the next digit of the answer. 
Result so far: 76837.820276
Subtracting 3906 from 4230 leaves us with 324.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3240, and continue the process.

Advancing to step 15:
The number 651 fits into 3240 4 times, leaving a remainder of 636.
Record the quotient 4 as the next digit in the result. 
Result so far: 76837.8202764
The remainder is 636 after subtracting 2604 from 3240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6360, and continue the process.

Let's proceed to step 16:
6360 divided by 651 is 9 with a remainder of 501.
Write down 9 as next digit of the result. 
Result so far: 76837.82027649
The remainder is 501 after subtracting 5859 from 6360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5010, and continue the process.

In conclusion, the division gives 76837.82027649 with a balance of 5.01e-07.