64497748 ÷ 921 
The aim is to understand the frequency of 921 in 64497748.

Step 1:
921 goes into 6 0 times with a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Append the next digit (4) from the dividend to 6 and continue with: 64 / 921

On to step 2:
If we divide 64 by 921, we get 0 and a remainder of 64.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 64 leaves us with 64.
Bring next digit (4) of the dividend behind the 64 and repeat the process: 644 / 921

On to step 3:
921 can be fit into 644 0 times, resulting in a remainder of 644.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 644 after subtracting 0 from 644.
Bring next digit (9) of the dividend behind the 644 and repeat the process: 6449 / 921

On to step 4:
6449 divided by 921 is 7 with a remainder of 2.
Record the quotient 7 as the next digit in the result. 
Result so far: 7.0
Deduct 6447 from 6449 and we're left with 2.
Bring next digit (7) of the dividend behind the 2 and repeat the process: 27 / 921

Step 5:
27 divided by 921 is 0 with a remainder of 27.
Use 0 as the next digit of our solution. 
Result so far: 70.0
Subtracting 0 from 27 leaves us with 27.
Take the next digit (7) from the dividend and append it to 27, then repeat: 277 / 921

Moving on to step 6:
When dividing 277 by 921, we get 0 with a remainder of 277.
Write down 0 as next digit of the result. 
Result so far: 700.0
The remainder is 277 after subtracting 0 from 277.
Fetch the next digit (4) from the dividend, attach it to 277 and continue: 2774 / 921

Advancing to step 7:
2774 divided by 921 is 3 with a remainder of 11.
Write down 3 as next digit of the result. 
Result so far: 7003.0
Subtracting 2763 from 2774 leaves us with 11.
Fetch the next digit (8) from the dividend, attach it to 11 and continue: 118 / 921

On to step 8:
921 goes into 118 0 times with a remainder of 118.
Put 0 as the next digit of the answer. 
Result so far: 70030.0
Subtract 0 from 118 to get 118.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1180, and continue the process.

On to step 9:
921 goes into 1180 1 times with a remainder of 259.
Put 1 as the next digit of the answer. 
Result so far: 70030.1
If we take 921 away from 1180, we end up with 259.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2590, and continue the process.

On to step 10:
If we divide 2590 by 921, we get 2 and a remainder of 748.
Write down 2 as next digit of the result. 
Result so far: 70030.12
Subtract 1842 from 2590 to get 748.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7480, and continue the process.

Going ahead to step 11:
If we divide 7480 by 921, we get 8 and a remainder of 112.
The number 8 becomes the next digit in our result. 
Result so far: 70030.128
If we subtract 7368 from 7480, we get 112.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1120, and continue the process.

Let's proceed to step 12:
The number 921 fits into 1120 1 times, leaving a remainder of 199.
The next digit of our result is 1. 
Result so far: 70030.1281
If we subtract 921 from 1120, we get 199.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1990, and continue the process.

Step 13:
When dividing 1990 by 921, we get 2 with a remainder of 148.
Write down 2 as next digit of the result. 
Result so far: 70030.12812
Subtract 1842 from 1990 to get 148.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1480, and continue the process.

Going ahead to step 14:
921 can be fit into 1480 1 times, resulting in a remainder of 559.
The number 1 becomes the next digit in our result. 
Result so far: 70030.128121
Deduct 921 from 1480 and we're left with 559.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5590, and continue the process.

On to step 15:
921 can be fit into 5590 6 times, resulting in a remainder of 64.
Use 6 as the next digit of our solution. 
Result so far: 70030.1281216
The remainder is 64 after subtracting 5526 from 5590.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Advancing to step 16:
When dividing 640 by 921, we get 0 with a remainder of 640.
Use 0 as the next digit of our solution. 
Result so far: 70030.1281216
If we take 0 away from 640, we end up with 640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6400, and continue the process.

Our division results in 70030.1281216 with a remaining 6.4e-07.