We look at the division of 68521471 by 151 
The aim is to understand the frequency of 151 in 68521471.

Step 1:
151 can be fit into 6 0 times, resulting in a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Include the next digit (8) from the dividend after 6, then repeat: 68 / 151

Moving on to step 2:
The number 151 fits into 68 0 times, leaving a remainder of 68.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 68, we get 68.
Include the next digit (5) from the dividend after 68, then repeat: 685 / 151

Moving on to step 3:
If we divide 685 by 151, we get 4 and a remainder of 81.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
If we take 604 away from 685, we end up with 81.
Grab the next digit (2) from the dividend, add it to 81, then carry on: 812 / 151

Advancing to step 4:
When dividing 812 by 151, we get 5 with a remainder of 57.
Write down 5 as next digit of the result. 
Result so far: 45.0
If we take 755 away from 812, we end up with 57.
Grab the next digit (1) from the dividend, add it to 57, then carry on: 571 / 151

Going ahead to step 5:
571 divided by 151 is 3 with a remainder of 118.
The next digit of our result is 3. 
Result so far: 453.0
Subtracting 453 from 571 leaves us with 118.
Take the next digit (4) from the dividend and append it to 118, then repeat: 1184 / 151

Advancing to step 6:
The number 151 fits into 1184 7 times, leaving a remainder of 127.
Put 7 as the next digit of the answer. 
Result so far: 4537.0
If we subtract 1057 from 1184, we get 127.
Append the next digit (7) from the dividend to 127 and continue with: 1277 / 151

Let's proceed to step 7:
The number 151 fits into 1277 8 times, leaving a remainder of 69.
The number 8 becomes the next digit in our result. 
Result so far: 45378.0
If we subtract 1208 from 1277, we get 69.
Grab the next digit (1) from the dividend, add it to 69, then carry on: 691 / 151

Let's proceed to step 8:
151 can be fit into 691 4 times, resulting in a remainder of 87.
Record the quotient 4 as the next digit in the result. 
Result so far: 453784.0
Subtracting 604 from 691 leaves us with 87.
Since there are no more digits in the dividend, we add a zero to the remainder making it 870, and continue the process.

On to step 9:
151 goes into 870 5 times with a remainder of 115.
Use 5 as the next digit of our solution. 
Result so far: 453784.5
Deduct 755 from 870 and we're left with 115.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1150, and continue the process.

Advancing to step 10:
1150 divided by 151 is 7 with a remainder of 93.
Record the quotient 7 as the next digit in the result. 
Result so far: 453784.57
If we take 1057 away from 1150, we end up with 93.
Since there are no more digits in the dividend, we add a zero to the remainder making it 930, and continue the process.

Advancing to step 11:
If we divide 930 by 151, we get 6 and a remainder of 24.
Use 6 as the next digit of our solution. 
Result so far: 453784.576
If we take 906 away from 930, we end up with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Going ahead to step 12:
151 can be fit into 240 1 times, resulting in a remainder of 89.
Use 1 as the next digit of our solution. 
Result so far: 453784.5761
If we subtract 151 from 240, we get 89.
Since there are no more digits in the dividend, we add a zero to the remainder making it 890, and continue the process.

On to step 13:
The number 151 fits into 890 5 times, leaving a remainder of 135.
Write down 5 as next digit of the result. 
Result so far: 453784.57615
Subtracting 755 from 890 leaves us with 135.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1350, and continue the process.

Step 14:
When dividing 1350 by 151, we get 8 with a remainder of 142.
Put 8 as the next digit of the answer. 
Result so far: 453784.576158
The remainder is 142 after subtracting 1208 from 1350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1420, and continue the process.

On to step 15:
1420 divided by 151 is 9 with a remainder of 61.
The number 9 becomes the next digit in our result. 
Result so far: 453784.5761589
Subtracting 1359 from 1420 leaves us with 61.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

Advancing to step 16:
151 can be fit into 610 4 times, resulting in a remainder of 6.
The next digit of our result is 4. 
Result so far: 453784.57615894
If we take 604 away from 610, we end up with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

The final result is 453784.57615894 with a remainder of 6e-09.