64869984 divided by 149 
The aim is to understand the frequency of 149 in 64869984.

Moving on to step 1:
6 divided by 149 is 0 with a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Append the next digit (4) from the dividend to 6 and continue with: 64 / 149

On to step 2:
When dividing 64 by 149, we get 0 with a remainder of 64.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 64 to get 64.
Grab the next digit (8) from the dividend, add it to 64, then carry on: 648 / 149

Let's proceed to step 3:
If we divide 648 by 149, we get 4 and a remainder of 52.
Use 4 as the next digit of our solution. 
Result so far: 4.0
If we subtract 596 from 648, we get 52.
Include the next digit (6) from the dividend after 52, then repeat: 526 / 149

Advancing to step 4:
The number 149 fits into 526 3 times, leaving a remainder of 79.
Use 3 as the next digit of our solution. 
Result so far: 43.0
If we take 447 away from 526, we end up with 79.
Fetch the next digit (9) from the dividend, attach it to 79 and continue: 799 / 149

Advancing to step 5:
799 divided by 149 is 5 with a remainder of 54.
Record the quotient 5 as the next digit in the result. 
Result so far: 435.0
Deduct 745 from 799 and we're left with 54.
Bring next digit (9) of the dividend behind the 54 and repeat the process: 549 / 149

Advancing to step 6:
If we divide 549 by 149, we get 3 and a remainder of 102.
The number 3 becomes the next digit in our result. 
Result so far: 4353.0
If we subtract 447 from 549, we get 102.
Fetch the next digit (8) from the dividend, attach it to 102 and continue: 1028 / 149

Moving on to step 7:
1028 divided by 149 is 6 with a remainder of 134.
Put 6 as the next digit of the answer. 
Result so far: 43536.0
Subtracting 894 from 1028 leaves us with 134.
Grab the next digit (4) from the dividend, add it to 134, then carry on: 1344 / 149

Let's proceed to step 8:
149 goes into 1344 9 times with a remainder of 3.
Put 9 as the next digit of the answer. 
Result so far: 435369.0
Subtract 1341 from 1344 to get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Moving on to step 9:
If we divide 30 by 149, we get 0 and a remainder of 30.
Record the quotient 0 as the next digit in the result. 
Result so far: 435369.0
Subtracting 0 from 30 leaves us with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Advancing to step 10:
149 goes into 300 2 times with a remainder of 2.
Write down 2 as next digit of the result. 
Result so far: 435369.02
Subtract 298 from 300 to 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.

Moving on to step 11:
If we divide 20 by 149, we get 0 and a remainder of 20.
The next digit of our result is 0. 
Result so far: 435369.02
If we subtract 0 from 20, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

On to step 12:
The number 149 fits into 200 1 times, leaving a remainder of 51.
The number 1 becomes the next digit in our result. 
Result so far: 435369.0201
Deduct 149 from 200 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.

Step 13:
149 goes into 510 3 times with a remainder of 63.
The number 3 becomes the next digit in our result. 
Result so far: 435369.02013
Subtracting 447 from 510 leaves us with 63.
Since there are no more digits in the dividend, we add a zero to the remainder making it 630, and continue the process.

Let's proceed to step 14:
630 divided by 149 is 4 with a remainder of 34.
The next digit of our result is 4. 
Result so far: 435369.020134
If we subtract 596 from 630, we get 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

On to step 15:
340 divided by 149 is 2 with a remainder of 42.
Write down 2 as next digit of the result. 
Result so far: 435369.0201342
If we take 298 away from 340, we end up with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Let's proceed to step 16:
149 goes into 420 2 times with a remainder of 122.
Put 2 as the next digit of the answer. 
Result so far: 435369.02013422
If we subtract 298 from 420, we get 122.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1220, and continue the process.

After the division, we end up with 435369.02013422 and a remainder of 1.22e-07.