83405290 ÷ 664 
Our goal is to divide 83405290 by 664.

Moving on to step 1:
If we divide 8 by 664, 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.
Fetch the next digit (3) from the dividend, attach it to 8 and continue: 83 / 664

Let's proceed to step 2:
The number 664 fits into 83 0 times, leaving a remainder of 83.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 83 leaves us with 83.
Grab the next digit (4) from the dividend, add it to 83, then carry on: 834 / 664

Going ahead to step 3:
When dividing 834 by 664, we get 1 with a remainder of 170.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
The remainder is 170 after subtracting 664 from 834.
Grab the next digit (0) from the dividend, add it to 170, then carry on: 1700 / 664

Moving on to step 4:
When dividing 1700 by 664, we get 2 with a remainder of 372.
The next digit of our result is 2. 
Result so far: 12.0
The remainder is 372 after subtracting 1328 from 1700.
Include the next digit (5) from the dividend after 372, then repeat: 3725 / 664

Step 5:
If we divide 3725 by 664, we get 5 and a remainder of 405.
Record the quotient 5 as the next digit in the result. 
Result so far: 125.0
Subtracting 3320 from 3725 leaves us with 405.
Include the next digit (2) from the dividend after 405, then repeat: 4052 / 664

Step 6:
The number 664 fits into 4052 6 times, leaving a remainder of 68.
The number 6 becomes the next digit in our result. 
Result so far: 1256.0
If we subtract 3984 from 4052, we get 68.
Append the next digit (9) from the dividend to 68 and continue with: 689 / 664

Moving on to step 7:
The number 664 fits into 689 1 times, leaving a remainder of 25.
Write down 1 as next digit of the result. 
Result so far: 12561.0
Deduct 664 from 689 and we're left with 25.
Take the next digit (0) from the dividend and append it to 25, then repeat: 250 / 664

Going ahead to step 8:
When dividing 250 by 664, we get 0 with a remainder of 250.
Put 0 as the next digit of the answer. 
Result so far: 125610.0
Subtract 0 from 250 to get 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2500, and continue the process.

Advancing to step 9:
If we divide 2500 by 664, we get 3 and a remainder of 508.
Record the quotient 3 as the next digit in the result. 
Result so far: 125610.3
Deduct 1992 from 2500 and we're left with 508.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5080, and continue the process.

On to step 10:
The number 664 fits into 5080 7 times, leaving a remainder of 432.
The next digit of our result is 7. 
Result so far: 125610.37
Subtracting 4648 from 5080 leaves us with 432.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4320, and continue the process.

Step 11:
664 goes into 4320 6 times with a remainder of 336.
Write down 6 as next digit of the result. 
Result so far: 125610.376
If we take 3984 away from 4320, we end up with 336.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3360, and continue the process.

Going ahead to step 12:
When dividing 3360 by 664, we get 5 with a remainder of 40.
The number 5 becomes the next digit in our result. 
Result so far: 125610.3765
Deduct 3320 from 3360 and we're left with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

On to step 13:
When dividing 400 by 664, we get 0 with a remainder of 400.
The next digit of our result is 0. 
Result so far: 125610.3765
Deduct 0 from 400 and we're left with 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

Advancing to step 14:
664 goes into 4000 6 times with a remainder of 16.
Use 6 as the next digit of our solution. 
Result so far: 125610.376506
If we subtract 3984 from 4000, we 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.

Advancing to step 15:
160 divided by 664 is 0 with a remainder of 160.
Write down 0 as next digit of the result. 
Result so far: 125610.376506
If we take 0 away from 160, we end up 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.

Advancing to step 16:
If we divide 1600 by 664, we get 2 and a remainder of 272.
Write down 2 as next digit of the result. 
Result so far: 125610.37650602
Subtracting 1328 from 1600 leaves us with 272.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2720, and continue the process.

The final result is 125610.37650602 with a remainder of 2.72e-07.