We divide 3866635 by 291
We want to figure out the number of times 3866635 can be divided by 291.

Going ahead to step 1:
If we divide 3 by 291, we get 0 and a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Take the next digit (8) from the dividend and append it to 3, then repeat: 38 / 291

On to step 2:
If we divide 38 by 291, we get 0 and a remainder of 38.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 38 after subtracting 0 from 38.
Bring next digit (6) of the dividend behind the 38 and repeat the process: 386 / 291

Let's proceed to step 3:
The number 291 fits into 386 1 times, leaving a remainder of 95.
The next digit of our result is 1. 
Result so far: 1.0
If we take 291 away from 386, we end up with 95.
Take the next digit (6) from the dividend and append it to 95, then repeat: 956 / 291

Advancing to step 4:
The number 291 fits into 956 3 times, leaving a remainder of 83.
Put 3 as the next digit of the answer. 
Result so far: 13.0
Deduct 873 from 956 and we're left with 83.
Append the next digit (6) from the dividend to 83 and continue with: 836 / 291

Let's proceed to step 5:
291 goes into 836 2 times with a remainder of 254.
The number 2 becomes the next digit in our result. 
Result so far: 132.0
Subtract 582 from 836 to get 254.
Bring next digit (3) of the dividend behind the 254 and repeat the process: 2543 / 291

On to step 6:
291 can be fit into 2543 8 times, resulting in a remainder of 215.
Use 8 as the next digit of our solution. 
Result so far: 1328.0
The remainder is 215 after subtracting 2328 from 2543.
Bring next digit (5) of the dividend behind the 215 and repeat the process: 2155 / 291

Advancing to step 7:
If we divide 2155 by 291, we get 7 and a remainder of 118.
Record the quotient 7 as the next digit in the result. 
Result so far: 13287.0
Deduct 2037 from 2155 and we're left with 118.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1180, and continue the process.

Advancing to step 8:
The number 291 fits into 1180 4 times, leaving a remainder of 16.
The number 4 becomes the next digit in our result. 
Result so far: 13287.4
Subtract 1164 from 1180 to get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

On to step 9:
If we divide 160 by 291, we get 0 and a remainder of 160.
The number 0 becomes the next digit in our result. 
Result so far: 13287.4
Subtracting 0 from 160 leaves us with 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

On to step 10:
When dividing 1600 by 291, we get 5 with a remainder of 145.
The number 5 becomes the next digit in our result. 
Result so far: 13287.405
If we subtract 1455 from 1600, we get 145.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1450, and continue the process.

Advancing to step 11:
If we divide 1450 by 291, we get 4 and a remainder of 286.
The number 4 becomes the next digit in our result. 
Result so far: 13287.4054
Subtracting 1164 from 1450 leaves us with 286.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2860, and continue the process.

Advancing to step 12:
291 goes into 2860 9 times with a remainder of 241.
Record the quotient 9 as the next digit in the result. 
Result so far: 13287.40549
If we subtract 2619 from 2860, we get 241.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2410, and continue the process.

Moving on to step 13:
The number 291 fits into 2410 8 times, leaving a remainder of 82.
Record the quotient 8 as the next digit in the result. 
Result so far: 13287.405498
If we take 2328 away from 2410, we end up with 82.
Since there are no more digits in the dividend, we add a zero to the remainder making it 820, and continue the process.

Moving on to step 14:
If we divide 820 by 291, we get 2 and a remainder of 238.
The number 2 becomes the next digit in our result. 
Result so far: 13287.4054982
If we take 582 away from 820, we end up with 238.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2380, and continue the process.

Moving on to step 15:
If we divide 2380 by 291, we get 8 and a remainder of 52.
Put 8 as the next digit of the answer. 
Result so far: 13287.40549828
The remainder is 52 after subtracting 2328 from 2380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

In conclusion, the division gives 13287.40549828 with a balance of 5.2e-08.