We're dividing 45058319 by 646 
Our goal is to divide 45058319 by 646.

Going ahead to step 1:
4 divided by 646 is 0 with a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 4, we get 4.
Append the next digit (5) from the dividend to 4 and continue with: 45 / 646

On to step 2:
When dividing 45 by 646, we get 0 with a remainder of 45.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 45 and we're left with 45.
Include the next digit (0) from the dividend after 45, then repeat: 450 / 646

Going ahead to step 3:
The number 646 fits into 450 0 times, leaving a remainder of 450.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 450 and we're left with 450.
Include the next digit (5) from the dividend after 450, then repeat: 4505 / 646

Going ahead to step 4:
646 goes into 4505 6 times with a remainder of 629.
Record the quotient 6 as the next digit in the result. 
Result so far: 6.0
Subtracting 3876 from 4505 leaves us with 629.
Append the next digit (8) from the dividend to 629 and continue with: 6298 / 646

Going ahead to step 5:
646 goes into 6298 9 times with a remainder of 484.
Put 9 as the next digit of the answer. 
Result so far: 69.0
Subtract 5814 from 6298 to get 484.
Include the next digit (3) from the dividend after 484, then repeat: 4843 / 646

Advancing to step 6:
When dividing 4843 by 646, we get 7 with a remainder of 321.
Put 7 as the next digit of the answer. 
Result so far: 697.0
Deduct 4522 from 4843 and we're left with 321.
Take the next digit (1) from the dividend and append it to 321, then repeat: 3211 / 646

On to step 7:
If we divide 3211 by 646, we get 4 and a remainder of 627.
Use 4 as the next digit of our solution. 
Result so far: 6974.0
Deduct 2584 from 3211 and we're left with 627.
Take the next digit (9) from the dividend and append it to 627, then repeat: 6279 / 646

Going ahead to step 8:
When dividing 6279 by 646, we get 9 with a remainder of 465.
Record the quotient 9 as the next digit in the result. 
Result so far: 69749.0
Subtracting 5814 from 6279 leaves us with 465.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4650, and continue the process.

Going ahead to step 9:
If we divide 4650 by 646, we get 7 and a remainder of 128.
The number 7 becomes the next digit in our result. 
Result so far: 69749.7
Deduct 4522 from 4650 and we're left with 128.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1280, and continue the process.

On to step 10:
When dividing 1280 by 646, we get 1 with a remainder of 634.
Put 1 as the next digit of the answer. 
Result so far: 69749.71
The remainder is 634 after subtracting 646 from 1280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6340, and continue the process.

Let's proceed to step 11:
646 can be fit into 6340 9 times, resulting in a remainder of 526.
Record the quotient 9 as the next digit in the result. 
Result so far: 69749.719
Subtracting 5814 from 6340 leaves us with 526.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5260, and continue the process.

Step 12:
646 can be fit into 5260 8 times, resulting in a remainder of 92.
Put 8 as the next digit of the answer. 
Result so far: 69749.7198
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.

Going ahead to step 13:
646 can be fit into 920 1 times, resulting in a remainder of 274.
Write down 1 as next digit of the result. 
Result so far: 69749.71981
If we take 646 away from 920, we end up with 274.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2740, and continue the process.

Advancing to step 14:
If we divide 2740 by 646, we get 4 and a remainder of 156.
The next digit of our result is 4. 
Result so far: 69749.719814
If we take 2584 away from 2740, we end up with 156.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1560, and continue the process.

Step 15:
The number 646 fits into 1560 2 times, leaving a remainder of 268.
Put 2 as the next digit of the answer. 
Result so far: 69749.7198142
If we take 1292 away from 1560, we end up with 268.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2680, and continue the process.

Moving on to step 16:
646 goes into 2680 4 times with a remainder of 96.
Write down 4 as next digit of the result. 
Result so far: 69749.71981424
If we take 2584 away from 2680, we end up with 96.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

In conclusion, the division gives 69749.71981424 with a balance of 9.6e-08.