We divide 85799539 by 646
We want to figure out the number of times 85799539 can be divided by 646.

Let's proceed to step 1:
646 goes into 8 0 times with a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Include the next digit (5) from the dividend after 8, then repeat: 85 / 646

On to step 2:
If we divide 85 by 646, we get 0 and a remainder of 85.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 85 leaves us with 85.
Append the next digit (7) from the dividend to 85 and continue with: 857 / 646

Going ahead to step 3:
646 can be fit into 857 1 times, resulting in a remainder of 211.
The next digit of our result is 1. 
Result so far: 1.0
If we subtract 646 from 857, we get 211.
Include the next digit (9) from the dividend after 211, then repeat: 2119 / 646

Step 4:
If we divide 2119 by 646, we get 3 and a remainder of 181.
Use 3 as the next digit of our solution. 
Result so far: 13.0
Subtract 1938 from 2119 to get 181.
Include the next digit (9) from the dividend after 181, then repeat: 1819 / 646

Advancing to step 5:
646 can be fit into 1819 2 times, resulting in a remainder of 527.
Put 2 as the next digit of the answer. 
Result so far: 132.0
Subtracting 1292 from 1819 leaves us with 527.
Append the next digit (5) from the dividend to 527 and continue with: 5275 / 646

Going ahead to step 6:
646 can be fit into 5275 8 times, resulting in a remainder of 107.
Use 8 as the next digit of our solution. 
Result so far: 1328.0
If we take 5168 away from 5275, we end up with 107.
Bring next digit (3) of the dividend behind the 107 and repeat the process: 1073 / 646

On to step 7:
If we divide 1073 by 646, we get 1 and a remainder of 427.
Record the quotient 1 as the next digit in the result. 
Result so far: 13281.0
The remainder is 427 after subtracting 646 from 1073.
Grab the next digit (9) from the dividend, add it to 427, then carry on: 4279 / 646

On to step 8:
646 goes into 4279 6 times with a remainder of 403.
The number 6 becomes the next digit in our result. 
Result so far: 132816.0
The remainder is 403 after subtracting 3876 from 4279.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4030, and continue the process.

Moving on to step 9:
If we divide 4030 by 646, we get 6 and a remainder of 154.
The next digit of our result is 6. 
Result so far: 132816.6
Deduct 3876 from 4030 and we're left with 154.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1540, and continue the process.

Step 10:
646 can be fit into 1540 2 times, resulting in a remainder of 248.
Put 2 as the next digit of the answer. 
Result so far: 132816.62
The remainder is 248 after subtracting 1292 from 1540.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2480, and continue the process.

On to step 11:
646 goes into 2480 3 times with a remainder of 542.
Put 3 as the next digit of the answer. 
Result so far: 132816.623
If we subtract 1938 from 2480, we get 542.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5420, and continue the process.

On to step 12:
646 can be fit into 5420 8 times, resulting in a remainder of 252.
The number 8 becomes the next digit in our result. 
Result so far: 132816.6238
If we subtract 5168 from 5420, we get 252.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2520, and continue the process.

Step 13:
When dividing 2520 by 646, we get 3 with a remainder of 582.
Put 3 as the next digit of the answer. 
Result so far: 132816.62383
The remainder is 582 after subtracting 1938 from 2520.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5820, and continue the process.

On to step 14:
646 can be fit into 5820 9 times, resulting in a remainder of 6.
Put 9 as the next digit of the answer. 
Result so far: 132816.623839
If we take 5814 away from 5820, 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.

Moving on to step 15:
The number 646 fits into 60 0 times, leaving a remainder of 60.
The next digit of our result is 0. 
Result so far: 132816.623839
If we take 0 away from 60, we end up with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Going ahead to step 16:
When dividing 600 by 646, we get 0 with a remainder of 600.
The next digit of our result is 0. 
Result so far: 132816.623839
If we subtract 0 from 600, we get 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6000, and continue the process.

After the division, we end up with 132816.623839 and a remainder of 6e-07.