Let's divide 8610393 by 409
We want to divide 8610393 by 409.

Going ahead to step 1:
If we divide 8 by 409, we get 0 and a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Take the next digit (6) from the dividend and append it to 8, then repeat: 86 / 409

Step 2:
409 goes into 86 0 times with a remainder of 86.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 86 after subtracting 0 from 86.
Include the next digit (1) from the dividend after 86, then repeat: 861 / 409

Advancing to step 3:
If we divide 861 by 409, we get 2 and a remainder of 43.
Put 2 as the next digit of the answer. 
Result so far: 2.0
Deduct 818 from 861 and we're left with 43.
Take the next digit (0) from the dividend and append it to 43, then repeat: 430 / 409

Step 4:
If we divide 430 by 409, we get 1 and a remainder of 21.
The number 1 becomes the next digit in our result. 
Result so far: 21.0
Subtracting 409 from 430 leaves us with 21.
Append the next digit (3) from the dividend to 21 and continue with: 213 / 409

Let's proceed to step 5:
The number 409 fits into 213 0 times, leaving a remainder of 213.
Use 0 as the next digit of our solution. 
Result so far: 210.0
The remainder is 213 after subtracting 0 from 213.
Grab the next digit (9) from the dividend, add it to 213, then carry on: 2139 / 409

Step 6:
The number 409 fits into 2139 5 times, leaving a remainder of 94.
Write down 5 as next digit of the result. 
Result so far: 2105.0
The remainder is 94 after subtracting 2045 from 2139.
Append the next digit (3) from the dividend to 94 and continue with: 943 / 409

Moving on to step 7:
409 goes into 943 2 times with a remainder of 125.
Use 2 as the next digit of our solution. 
Result so far: 21052.0
The remainder is 125 after subtracting 818 from 943.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1250, and continue the process.

Going ahead to step 8:
409 can be fit into 1250 3 times, resulting in a remainder of 23.
The number 3 becomes the next digit in our result. 
Result so far: 21052.3
If we take 1227 away from 1250, we end up with 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Let's proceed to step 9:
409 can be fit into 230 0 times, resulting in a remainder of 230.
Use 0 as the next digit of our solution. 
Result so far: 21052.3
If we take 0 away from 230, we end up with 230.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2300, and continue the process.

Going ahead to step 10:
2300 divided by 409 is 5 with a remainder of 255.
The next digit of our result is 5. 
Result so far: 21052.305
The remainder is 255 after subtracting 2045 from 2300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2550, and continue the process.

Let's proceed to step 11:
2550 divided by 409 is 6 with a remainder of 96.
Put 6 as the next digit of the answer. 
Result so far: 21052.3056
If we subtract 2454 from 2550, we get 96.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

Let's proceed to step 12:
960 divided by 409 is 2 with a remainder of 142.
The number 2 becomes the next digit in our result. 
Result so far: 21052.30562
The remainder is 142 after subtracting 818 from 960.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1420, and continue the process.

Step 13:
When dividing 1420 by 409, we get 3 with a remainder of 193.
Put 3 as the next digit of the answer. 
Result so far: 21052.305623
The remainder is 193 after subtracting 1227 from 1420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1930, and continue the process.

Let's proceed to step 14:
409 goes into 1930 4 times with a remainder of 294.
Use 4 as the next digit of our solution. 
Result so far: 21052.3056234
Deduct 1636 from 1930 and we're left with 294.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2940, and continue the process.

Let's proceed to step 15:
If we divide 2940 by 409, we get 7 and a remainder of 77.
Record the quotient 7 as the next digit in the result. 
Result so far: 21052.30562347
If we subtract 2863 from 2940, we get 77.
Since there are no more digits in the dividend, we add a zero to the remainder making it 770, and continue the process.

The final outcome is 21052.30562347, with a leftover of 7.7e-08.