We're dividing 64432191 by 860 
The aim is to understand the frequency of 860 in 64432191.

Moving on to step 1:
If we divide 6 by 860, we get 0 and a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Include the next digit (4) from the dividend after 6, then repeat: 64 / 860

Advancing to step 2:
64 divided by 860 is 0 with a remainder of 64.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 64 to get 64.
Fetch the next digit (4) from the dividend, attach it to 64 and continue: 644 / 860

Let's proceed to step 3:
The number 860 fits into 644 0 times, leaving a remainder of 644.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 644, we get 644.
Grab the next digit (3) from the dividend, add it to 644, then carry on: 6443 / 860

Step 4:
The number 860 fits into 6443 7 times, leaving a remainder of 423.
Use 7 as the next digit of our solution. 
Result so far: 7.0
Subtracting 6020 from 6443 leaves us with 423.
Fetch the next digit (2) from the dividend, attach it to 423 and continue: 4232 / 860

Step 5:
When dividing 4232 by 860, we get 4 with a remainder of 792.
Put 4 as the next digit of the answer. 
Result so far: 74.0
The remainder is 792 after subtracting 3440 from 4232.
Take the next digit (1) from the dividend and append it to 792, then repeat: 7921 / 860

Step 6:
7921 divided by 860 is 9 with a remainder of 181.
The number 9 becomes the next digit in our result. 
Result so far: 749.0
If we take 7740 away from 7921, we end up with 181.
Take the next digit (9) from the dividend and append it to 181, then repeat: 1819 / 860

Moving on to step 7:
The number 860 fits into 1819 2 times, leaving a remainder of 99.
Use 2 as the next digit of our solution. 
Result so far: 7492.0
If we take 1720 away from 1819, we end up with 99.
Take the next digit (1) from the dividend and append it to 99, then repeat: 991 / 860

Going ahead to step 8:
When dividing 991 by 860, we get 1 with a remainder of 131.
The number 1 becomes the next digit in our result. 
Result so far: 74921.0
If we take 860 away from 991, we end up with 131.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1310, and continue the process.

Advancing to step 9:
860 goes into 1310 1 times with a remainder of 450.
The number 1 becomes the next digit in our result. 
Result so far: 74921.1
If we subtract 860 from 1310, we get 450.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4500, and continue the process.

Advancing to step 10:
4500 divided by 860 is 5 with a remainder of 200.
The next digit of our result is 5. 
Result so far: 74921.15
If we subtract 4300 from 4500, we get 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Step 11:
The number 860 fits into 2000 2 times, leaving a remainder of 280.
The number 2 becomes the next digit in our result. 
Result so far: 74921.152
Subtract 1720 from 2000 to get 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2800, and continue the process.

Let's proceed to step 12:
860 goes into 2800 3 times with a remainder of 220.
The number 3 becomes the next digit in our result. 
Result so far: 74921.1523
If we take 2580 away from 2800, we end up with 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2200, and continue the process.

Advancing to step 13:
The number 860 fits into 2200 2 times, leaving a remainder of 480.
Use 2 as the next digit of our solution. 
Result so far: 74921.15232
Deduct 1720 from 2200 and we're left with 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4800, and continue the process.

On to step 14:
860 can be fit into 4800 5 times, resulting in a remainder of 500.
Use 5 as the next digit of our solution. 
Result so far: 74921.152325
Subtracting 4300 from 4800 leaves us with 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5000, and continue the process.

On to step 15:
860 can be fit into 5000 5 times, resulting in a remainder of 700.
Put 5 as the next digit of the answer. 
Result so far: 74921.1523255
Deduct 4300 from 5000 and we're left with 700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7000, and continue the process.

After the division, we end up with 74921.1523255 and a remainder of 7e-06.