6429980 divided by 633 
Let's see how many times 633 fits into 6429980.

On to step 1:
When dividing 6 by 633, we get 0 with a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Bring next digit (4) of the dividend behind the 6 and repeat the process: 64 / 633

Advancing to step 2:
If we divide 64 by 633, we get 0 and a remainder of 64.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 64, we get 64.
Fetch the next digit (2) from the dividend, attach it to 64 and continue: 642 / 633

Moving on to step 3:
642 divided by 633 is 1 with a remainder of 9.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we subtract 633 from 642, we get 9.
Take the next digit (9) from the dividend and append it to 9, then repeat: 99 / 633

Step 4:
If we divide 99 by 633, we get 0 and a remainder of 99.
Use 0 as the next digit of our solution. 
Result so far: 10.0
Subtracting 0 from 99 leaves us with 99.
Grab the next digit (9) from the dividend, add it to 99, then carry on: 999 / 633

Going ahead to step 5:
633 can be fit into 999 1 times, resulting in a remainder of 366.
The number 1 becomes the next digit in our result. 
Result so far: 101.0
If we subtract 633 from 999, we get 366.
Fetch the next digit (8) from the dividend, attach it to 366 and continue: 3668 / 633

Moving on to step 6:
The number 633 fits into 3668 5 times, leaving a remainder of 503.
Use 5 as the next digit of our solution. 
Result so far: 1015.0
Deduct 3165 from 3668 and we're left with 503.
Fetch the next digit (0) from the dividend, attach it to 503 and continue: 5030 / 633

On to step 7:
If we divide 5030 by 633, we get 7 and a remainder of 599.
Use 7 as the next digit of our solution. 
Result so far: 10157.0
Subtracting 4431 from 5030 leaves us with 599.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5990, and continue the process.

Let's proceed to step 8:
The number 633 fits into 5990 9 times, leaving a remainder of 293.
The number 9 becomes the next digit in our result. 
Result so far: 10157.9
If we subtract 5697 from 5990, we get 293.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2930, and continue the process.

Advancing to step 9:
633 can be fit into 2930 4 times, resulting in a remainder of 398.
Record the quotient 4 as the next digit in the result. 
Result so far: 10157.94
If we subtract 2532 from 2930, we get 398.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3980, and continue the process.

Advancing to step 10:
When dividing 3980 by 633, we get 6 with a remainder of 182.
Write down 6 as next digit of the result. 
Result so far: 10157.946
If we take 3798 away from 3980, we end up with 182.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1820, and continue the process.

On to step 11:
633 can be fit into 1820 2 times, resulting in a remainder of 554.
The next digit of our result is 2. 
Result so far: 10157.9462
Deduct 1266 from 1820 and we're left with 554.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5540, and continue the process.

Advancing to step 12:
633 can be fit into 5540 8 times, resulting in a remainder of 476.
Put 8 as the next digit of the answer. 
Result so far: 10157.94628
The remainder is 476 after subtracting 5064 from 5540.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4760, and continue the process.

Advancing to step 13:
633 goes into 4760 7 times with a remainder of 329.
Write down 7 as next digit of the result. 
Result so far: 10157.946287
If we take 4431 away from 4760, we end up with 329.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3290, and continue the process.

Going ahead to step 14:
633 can be fit into 3290 5 times, resulting in a remainder of 125.
Use 5 as the next digit of our solution. 
Result so far: 10157.9462875
If we subtract 3165 from 3290, we get 125.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1250, and continue the process.

Advancing to step 15:
633 goes into 1250 1 times with a remainder of 617.
The next digit of our result is 1. 
Result so far: 10157.94628751
The remainder is 617 after subtracting 633 from 1250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6170, and continue the process.

After the division, we end up with 10157.94628751 and a remainder of 6.17e-07.