14151591 divided by 640 
We want to figure out the number of times 14151591 can be divided by 640.

Advancing to step 1:
640 goes into 1 0 times with a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Fetch the next digit (4) from the dividend, attach it to 1 and continue: 14 / 640

Step 2:
640 goes into 14 0 times with a remainder of 14.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 14, we end up with 14.
Include the next digit (1) from the dividend after 14, then repeat: 141 / 640

Going ahead to step 3:
If we divide 141 by 640, we get 0 and a remainder of 141.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 141 leaves us with 141.
Fetch the next digit (5) from the dividend, attach it to 141 and continue: 1415 / 640

Moving on to step 4:
When dividing 1415 by 640, we get 2 with a remainder of 135.
Put 2 as the next digit of the answer. 
Result so far: 2.0
Subtracting 1280 from 1415 leaves us with 135.
Fetch the next digit (1) from the dividend, attach it to 135 and continue: 1351 / 640

Let's proceed to step 5:
If we divide 1351 by 640, we get 2 and a remainder of 71.
Record the quotient 2 as the next digit in the result. 
Result so far: 22.0
Subtracting 1280 from 1351 leaves us with 71.
Grab the next digit (5) from the dividend, add it to 71, then carry on: 715 / 640

Advancing to step 6:
640 can be fit into 715 1 times, resulting in a remainder of 75.
Record the quotient 1 as the next digit in the result. 
Result so far: 221.0
If we take 640 away from 715, we end up with 75.
Take the next digit (9) from the dividend and append it to 75, then repeat: 759 / 640

On to step 7:
When dividing 759 by 640, we get 1 with a remainder of 119.
Record the quotient 1 as the next digit in the result. 
Result so far: 2211.0
The remainder is 119 after subtracting 640 from 759.
Fetch the next digit (1) from the dividend, attach it to 119 and continue: 1191 / 640

Let's proceed to step 8:
1191 divided by 640 is 1 with a remainder of 551.
The number 1 becomes the next digit in our result. 
Result so far: 22111.0
Deduct 640 from 1191 and we're left with 551.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5510, and continue the process.

Let's proceed to step 9:
640 can be fit into 5510 8 times, resulting in a remainder of 390.
The next digit of our result is 8. 
Result so far: 22111.8
The remainder is 390 after subtracting 5120 from 5510.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3900, and continue the process.

Step 10:
If we divide 3900 by 640, we get 6 and a remainder of 60.
The number 6 becomes the next digit in our result. 
Result so far: 22111.86
The remainder is 60 after subtracting 3840 from 3900.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

On to step 11:
When dividing 600 by 640, we get 0 with a remainder of 600.
Put 0 as the next digit of the answer. 
Result so far: 22111.86
If we subtract 0 from 600, we get 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6000, and continue the process.

Advancing to step 12:
The number 640 fits into 6000 9 times, leaving a remainder of 240.
Use 9 as the next digit of our solution. 
Result so far: 22111.8609
Subtract 5760 from 6000 to get 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

Let's proceed to step 13:
If we divide 2400 by 640, we get 3 and a remainder of 480.
Put 3 as the next digit of the answer. 
Result so far: 22111.86093
If we take 1920 away from 2400, we end up with 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4800, and continue the process.

Going ahead to step 14:
640 goes into 4800 7 times with a remainder of 320.
Use 7 as the next digit of our solution. 
Result so far: 22111.860937
Subtract 4480 from 4800 to get 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

Going ahead to step 15:
If we divide 3200 by 640, we get 5 and a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 22111.8609375
The remainder is 0 after subtracting 3200 from 3200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 16:
The number 640 fits into 0 0 times, leaving a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 22111.8609375
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final result is 22111.8609375 with a remainder of 0.0.