64430534 ÷ 669 
Our goal is to divide 64430534 by 669.

Step 1:
669 goes into 6 0 times with a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Fetch the next digit (4) from the dividend, attach it to 6 and continue: 64 / 669

Advancing to step 2:
The number 669 fits into 64 0 times, leaving a remainder of 64.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 64 leaves us with 64.
Append the next digit (4) from the dividend to 64 and continue with: 644 / 669

Advancing to step 3:
644 divided by 669 is 0 with a remainder of 644.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 644, we get 644.
Fetch the next digit (3) from the dividend, attach it to 644 and continue: 6443 / 669

On to step 4:
If we divide 6443 by 669, we get 9 and a remainder of 422.
The next digit of our result is 9. 
Result so far: 9.0
If we subtract 6021 from 6443, we get 422.
Append the next digit (0) from the dividend to 422 and continue with: 4220 / 669

Let's proceed to step 5:
If we divide 4220 by 669, we get 6 and a remainder of 206.
The number 6 becomes the next digit in our result. 
Result so far: 96.0
If we take 4014 away from 4220, we end up with 206.
Bring next digit (5) of the dividend behind the 206 and repeat the process: 2065 / 669

On to step 6:
When dividing 2065 by 669, we get 3 with a remainder of 58.
Write down 3 as next digit of the result. 
Result so far: 963.0
The remainder is 58 after subtracting 2007 from 2065.
Append the next digit (3) from the dividend to 58 and continue with: 583 / 669

Let's proceed to step 7:
669 goes into 583 0 times with a remainder of 583.
Record the quotient 0 as the next digit in the result. 
Result so far: 9630.0
Subtracting 0 from 583 leaves us with 583.
Include the next digit (4) from the dividend after 583, then repeat: 5834 / 669

Let's proceed to step 8:
If we divide 5834 by 669, we get 8 and a remainder of 482.
Write down 8 as next digit of the result. 
Result so far: 96308.0
Deduct 5352 from 5834 and we're left with 482.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4820, and continue the process.

Step 9:
If we divide 4820 by 669, we get 7 and a remainder of 137.
The number 7 becomes the next digit in our result. 
Result so far: 96308.7
Deduct 4683 from 4820 and we're left with 137.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1370, and continue the process.

Moving on to step 10:
The number 669 fits into 1370 2 times, leaving a remainder of 32.
The number 2 becomes the next digit in our result. 
Result so far: 96308.72
Deduct 1338 from 1370 and we're left with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

On to step 11:
669 goes into 320 0 times with a remainder of 320.
Write down 0 as next digit of the result. 
Result so far: 96308.72
Subtracting 0 from 320 leaves us with 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

Step 12:
If we divide 3200 by 669, we get 4 and a remainder of 524.
The next digit of our result is 4. 
Result so far: 96308.7204
If we take 2676 away from 3200, we end up with 524.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5240, and continue the process.

Let's proceed to step 13:
669 goes into 5240 7 times with a remainder of 557.
Use 7 as the next digit of our solution. 
Result so far: 96308.72047
Deduct 4683 from 5240 and we're left with 557.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5570, and continue the process.

On to step 14:
The number 669 fits into 5570 8 times, leaving a remainder of 218.
The next digit of our result is 8. 
Result so far: 96308.720478
Deduct 5352 from 5570 and we're left with 218.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2180, and continue the process.

Let's proceed to step 15:
669 goes into 2180 3 times with a remainder of 173.
Write down 3 as next digit of the result. 
Result so far: 96308.7204783
Subtracting 2007 from 2180 leaves us with 173.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1730, and continue the process.

On to step 16:
The number 669 fits into 1730 2 times, leaving a remainder of 392.
The next digit of our result is 2. 
Result so far: 96308.72047832
If we subtract 1338 from 1730, we get 392.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3920, and continue the process.

After the division, we end up with 96308.72047832 and a remainder of 3.92e-07.