We divide 15639501 by 407
Our goal is to divide 15639501 by 407.

Step 1:
1 divided by 407 is 0 with a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Append the next digit (5) from the dividend to 1 and continue with: 15 / 407

Let's proceed to step 2:
If we divide 15 by 407, we get 0 and a remainder of 15.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 15 and we're left with 15.
Bring next digit (6) of the dividend behind the 15 and repeat the process: 156 / 407

On to step 3:
156 divided by 407 is 0 with a remainder of 156.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 156 after subtracting 0 from 156.
Include the next digit (3) from the dividend after 156, then repeat: 1563 / 407

Moving on to step 4:
If we divide 1563 by 407, we get 3 and a remainder of 342.
Use 3 as the next digit of our solution. 
Result so far: 3.0
If we subtract 1221 from 1563, we get 342.
Include the next digit (9) from the dividend after 342, then repeat: 3429 / 407

Advancing to step 5:
When dividing 3429 by 407, we get 8 with a remainder of 173.
Put 8 as the next digit of the answer. 
Result so far: 38.0
The remainder is 173 after subtracting 3256 from 3429.
Take the next digit (5) from the dividend and append it to 173, then repeat: 1735 / 407

Going ahead to step 6:
The number 407 fits into 1735 4 times, leaving a remainder of 107.
The number 4 becomes the next digit in our result. 
Result so far: 384.0
Deduct 1628 from 1735 and we're left with 107.
Append the next digit (0) from the dividend to 107 and continue with: 1070 / 407

Let's proceed to step 7:
1070 divided by 407 is 2 with a remainder of 256.
The next digit of our result is 2. 
Result so far: 3842.0
Deduct 814 from 1070 and we're left with 256.
Append the next digit (1) from the dividend to 256 and continue with: 2561 / 407

On to step 8:
2561 divided by 407 is 6 with a remainder of 119.
The next digit of our result is 6. 
Result so far: 38426.0
The remainder is 119 after subtracting 2442 from 2561.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1190, and continue the process.

On to step 9:
1190 divided by 407 is 2 with a remainder of 376.
Record the quotient 2 as the next digit in the result. 
Result so far: 38426.2
If we take 814 away from 1190, we end up with 376.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3760, and continue the process.

On to step 10:
3760 divided by 407 is 9 with a remainder of 97.
Put 9 as the next digit of the answer. 
Result so far: 38426.29
Subtracting 3663 from 3760 leaves us with 97.
Since there are no more digits in the dividend, we add a zero to the remainder making it 970, and continue the process.

On to step 11:
407 goes into 970 2 times with a remainder of 156.
Put 2 as the next digit of the answer. 
Result so far: 38426.292
If we take 814 away from 970, 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 12:
407 can be fit into 1560 3 times, resulting in a remainder of 339.
Put 3 as the next digit of the answer. 
Result so far: 38426.2923
Subtract 1221 from 1560 to get 339.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3390, and continue the process.

Let's proceed to step 13:
When dividing 3390 by 407, we get 8 with a remainder of 134.
Use 8 as the next digit of our solution. 
Result so far: 38426.29238
Deduct 3256 from 3390 and we're left with 134.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1340, and continue the process.

Moving on to step 14:
1340 divided by 407 is 3 with a remainder of 119.
The next digit of our result is 3. 
Result so far: 38426.292383
If we take 1221 away from 1340, we end up with 119.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1190, and continue the process.

Let's proceed to step 15:
If we divide 1190 by 407, we get 2 and a remainder of 376.
Write down 2 as next digit of the result. 
Result so far: 38426.2923832
Deduct 814 from 1190 and we're left with 376.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3760, and continue the process.

Moving on to step 16:
407 can be fit into 3760 9 times, resulting in a remainder of 97.
The next digit of our result is 9. 
Result so far: 38426.29238329
If we subtract 3663 from 3760, we get 97.
Since there are no more digits in the dividend, we add a zero to the remainder making it 970, and continue the process.

After the division, we end up with 38426.29238329 and a remainder of 9.7e-08.