86503371 divided by 448 
We want to figure out the number of times 86503371 can be divided by 448.

On to step 1:
The number 448 fits into 8 0 times, leaving a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Fetch the next digit (6) from the dividend, attach it to 8 and continue: 86 / 448

Going ahead to step 2:
448 goes into 86 0 times with a remainder of 86.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 86 after subtracting 0 from 86.
Bring next digit (5) of the dividend behind the 86 and repeat the process: 865 / 448

Moving on to step 3:
When dividing 865 by 448, we get 1 with a remainder of 417.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtracting 448 from 865 leaves us with 417.
Append the next digit (0) from the dividend to 417 and continue with: 4170 / 448

Advancing to step 4:
If we divide 4170 by 448, we get 9 and a remainder of 138.
Put 9 as the next digit of the answer. 
Result so far: 19.0
Deduct 4032 from 4170 and we're left with 138.
Take the next digit (3) from the dividend and append it to 138, then repeat: 1383 / 448

Going ahead to step 5:
448 goes into 1383 3 times with a remainder of 39.
Record the quotient 3 as the next digit in the result. 
Result so far: 193.0
Subtracting 1344 from 1383 leaves us with 39.
Grab the next digit (3) from the dividend, add it to 39, then carry on: 393 / 448

Advancing to step 6:
The number 448 fits into 393 0 times, leaving a remainder of 393.
Put 0 as the next digit of the answer. 
Result so far: 1930.0
Deduct 0 from 393 and we're left with 393.
Fetch the next digit (7) from the dividend, attach it to 393 and continue: 3937 / 448

Let's proceed to step 7:
448 goes into 3937 8 times with a remainder of 353.
Write down 8 as next digit of the result. 
Result so far: 19308.0
Deduct 3584 from 3937 and we're left with 353.
Take the next digit (1) from the dividend and append it to 353, then repeat: 3531 / 448

Moving on to step 8:
If we divide 3531 by 448, we get 7 and a remainder of 395.
The number 7 becomes the next digit in our result. 
Result so far: 193087.0
If we take 3136 away from 3531, we end up with 395.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3950, and continue the process.

Moving on to step 9:
448 can be fit into 3950 8 times, resulting in a remainder of 366.
The number 8 becomes the next digit in our result. 
Result so far: 193087.8
The remainder is 366 after subtracting 3584 from 3950.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3660, and continue the process.

On to step 10:
448 goes into 3660 8 times with a remainder of 76.
The number 8 becomes the next digit in our result. 
Result so far: 193087.88
Subtracting 3584 from 3660 leaves us with 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

The final outcome is 193087.88, with a leftover of 0.076.