We divide 91352423 by 640
Let's see how many times 640 fits into 91352423.

On to step 1:
The number 640 fits into 9 0 times, leaving a remainder of 9.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 9 and we're left with 9.
Grab the next digit (1) from the dividend, add it to 9, then carry on: 91 / 640

Let's proceed to step 2:
When dividing 91 by 640, we get 0 with a remainder of 91.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 91, we end up with 91.
Take the next digit (3) from the dividend and append it to 91, then repeat: 913 / 640

Step 3:
The number 640 fits into 913 1 times, leaving a remainder of 273.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtract 640 from 913 to get 273.
Bring next digit (5) of the dividend behind the 273 and repeat the process: 2735 / 640

Advancing to step 4:
640 goes into 2735 4 times with a remainder of 175.
Put 4 as the next digit of the answer. 
Result so far: 14.0
The remainder is 175 after subtracting 2560 from 2735.
Grab the next digit (2) from the dividend, add it to 175, then carry on: 1752 / 640

Moving on to step 5:
640 goes into 1752 2 times with a remainder of 472.
Record the quotient 2 as the next digit in the result. 
Result so far: 142.0
If we take 1280 away from 1752, we end up with 472.
Take the next digit (4) from the dividend and append it to 472, then repeat: 4724 / 640

Advancing to step 6:
640 goes into 4724 7 times with a remainder of 244.
Record the quotient 7 as the next digit in the result. 
Result so far: 1427.0
If we subtract 4480 from 4724, we get 244.
Take the next digit (2) from the dividend and append it to 244, then repeat: 2442 / 640

On to step 7:
The number 640 fits into 2442 3 times, leaving a remainder of 522.
Use 3 as the next digit of our solution. 
Result so far: 14273.0
Subtract 1920 from 2442 to get 522.
Append the next digit (3) from the dividend to 522 and continue with: 5223 / 640

Moving on to step 8:
640 goes into 5223 8 times with a remainder of 103.
The next digit of our result is 8. 
Result so far: 142738.0
If we subtract 5120 from 5223, we get 103.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1030, and continue the process.

Step 9:
640 can be fit into 1030 1 times, resulting in a remainder of 390.
Write down 1 as next digit of the result. 
Result so far: 142738.1
The remainder is 390 after subtracting 640 from 1030.
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:
When dividing 3900 by 640, we get 6 with a remainder of 60.
Use 6 as the next digit of our solution. 
Result so far: 142738.16
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.

Step 11:
If we divide 600 by 640, we get 0 and a remainder of 600.
Use 0 as the next digit of our solution. 
Result so far: 142738.16
If we take 0 away from 600, we end up with 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:
When dividing 6000 by 640, we get 9 with a remainder of 240.
Record the quotient 9 as the next digit in the result. 
Result so far: 142738.1609
Subtracting 5760 from 6000 leaves us with 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

Going ahead to step 13:
2400 divided by 640 is 3 with a remainder of 480.
The number 3 becomes the next digit in our result. 
Result so far: 142738.16093
The remainder is 480 after subtracting 1920 from 2400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4800, and continue the process.

Advancing to step 14:
640 goes into 4800 7 times with a remainder of 320.
Record the quotient 7 as the next digit in the result. 
Result so far: 142738.160937
Deduct 4480 from 4800 and we're left 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.

On to step 15:
640 can be fit into 3200 5 times, resulting in a remainder of 0.
The next digit of our result is 5. 
Result so far: 142738.1609375
Subtract 3200 from 3200 to get 0.
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:
640 can be fit into 0 0 times, resulting in a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 142738.1609375
Deduct 0 from 0 and we're left with 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 outcome is 142738.1609375, with a leftover of 0.0.