Let's divide 83404752 by 646
We're looking to find how many times 646 goes into 83404752.

Let's proceed to step 1:
If we divide 8 by 646, we get 0 and a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Append the next digit (3) from the dividend to 8 and continue with: 83 / 646

Let's proceed to step 2:
646 can be fit into 83 0 times, resulting in a remainder of 83.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 83 and we're left with 83.
Include the next digit (4) from the dividend after 83, then repeat: 834 / 646

On to step 3:
When dividing 834 by 646, we get 1 with a remainder of 188.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we take 646 away from 834, we end up with 188.
Append the next digit (0) from the dividend to 188 and continue with: 1880 / 646

Moving on to step 4:
The number 646 fits into 1880 2 times, leaving a remainder of 588.
The number 2 becomes the next digit in our result. 
Result so far: 12.0
Subtracting 1292 from 1880 leaves us with 588.
Include the next digit (4) from the dividend after 588, then repeat: 5884 / 646

Going ahead to step 5:
When dividing 5884 by 646, we get 9 with a remainder of 70.
Write down 9 as next digit of the result. 
Result so far: 129.0
If we take 5814 away from 5884, we end up with 70.
Append the next digit (7) from the dividend to 70 and continue with: 707 / 646

Advancing to step 6:
When dividing 707 by 646, we get 1 with a remainder of 61.
Use 1 as the next digit of our solution. 
Result so far: 1291.0
Subtract 646 from 707 to get 61.
Include the next digit (5) from the dividend after 61, then repeat: 615 / 646

Going ahead to step 7:
When dividing 615 by 646, we get 0 with a remainder of 615.
The next digit of our result is 0. 
Result so far: 12910.0
Deduct 0 from 615 and we're left with 615.
Take the next digit (2) from the dividend and append it to 615, then repeat: 6152 / 646

Step 8:
If we divide 6152 by 646, we get 9 and a remainder of 338.
The number 9 becomes the next digit in our result. 
Result so far: 129109.0
Subtracting 5814 from 6152 leaves us with 338.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3380, and continue the process.

Advancing to step 9:
When dividing 3380 by 646, we get 5 with a remainder of 150.
Use 5 as the next digit of our solution. 
Result so far: 129109.5
Deduct 3230 from 3380 and we're left with 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1500, and continue the process.

Moving on to step 10:
1500 divided by 646 is 2 with a remainder of 208.
The number 2 becomes the next digit in our result. 
Result so far: 129109.52
If we subtract 1292 from 1500, we get 208.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2080, and continue the process.

Advancing to step 11:
If we divide 2080 by 646, we get 3 and a remainder of 142.
The number 3 becomes the next digit in our result. 
Result so far: 129109.523
Deduct 1938 from 2080 and we're left with 142.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1420, and continue the process.

Advancing to step 12:
646 goes into 1420 2 times with a remainder of 128.
Put 2 as the next digit of the answer. 
Result so far: 129109.5232
The remainder is 128 after subtracting 1292 from 1420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1280, and continue the process.

Going ahead to step 13:
1280 divided by 646 is 1 with a remainder of 634.
Record the quotient 1 as the next digit in the result. 
Result so far: 129109.52321
Deduct 646 from 1280 and we're left with 634.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6340, and continue the process.

On to step 14:
If we divide 6340 by 646, we get 9 and a remainder of 526.
The number 9 becomes the next digit in our result. 
Result so far: 129109.523219
If we subtract 5814 from 6340, we get 526.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5260, and continue the process.

Let's proceed to step 15:
If we divide 5260 by 646, we get 8 and a remainder of 92.
Use 8 as the next digit of our solution. 
Result so far: 129109.5232198
If we take 5168 away from 5260, we end up with 92.
Since there are no more digits in the dividend, we add a zero to the remainder making it 920, and continue the process.

Step 16:
When dividing 920 by 646, we get 1 with a remainder of 274.
Put 1 as the next digit of the answer. 
Result so far: 129109.52321981
If we subtract 646 from 920, we get 274.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2740, and continue the process.

After the division, we end up with 129109.52321981 and a remainder of 2.74e-07.