We look at the division of 45198593 by 258 
Our goal is to divide 45198593 by 258.

Let's proceed to step 1:
258 can be fit into 4 0 times, resulting in a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Take the next digit (5) from the dividend and append it to 4, then repeat: 45 / 258

Let's proceed to step 2:
258 goes into 45 0 times with a remainder of 45.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 45 and we're left with 45.
Take the next digit (1) from the dividend and append it to 45, then repeat: 451 / 258

On to step 3:
258 goes into 451 1 times with a remainder of 193.
Write down 1 as next digit of the result. 
Result so far: 1.0
Deduct 258 from 451 and we're left with 193.
Include the next digit (9) from the dividend after 193, then repeat: 1939 / 258

Let's proceed to step 4:
If we divide 1939 by 258, we get 7 and a remainder of 133.
Write down 7 as next digit of the result. 
Result so far: 17.0
If we subtract 1806 from 1939, we get 133.
Bring next digit (8) of the dividend behind the 133 and repeat the process: 1338 / 258

Let's proceed to step 5:
The number 258 fits into 1338 5 times, leaving a remainder of 48.
The number 5 becomes the next digit in our result. 
Result so far: 175.0
Deduct 1290 from 1338 and we're left with 48.
Include the next digit (5) from the dividend after 48, then repeat: 485 / 258

Let's proceed to step 6:
258 goes into 485 1 times with a remainder of 227.
The number 1 becomes the next digit in our result. 
Result so far: 1751.0
Subtract 258 from 485 to get 227.
Fetch the next digit (9) from the dividend, attach it to 227 and continue: 2279 / 258

On to step 7:
2279 divided by 258 is 8 with a remainder of 215.
The number 8 becomes the next digit in our result. 
Result so far: 17518.0
Subtract 2064 from 2279 to get 215.
Grab the next digit (3) from the dividend, add it to 215, then carry on: 2153 / 258

Let's proceed to step 8:
The number 258 fits into 2153 8 times, leaving a remainder of 89.
Use 8 as the next digit of our solution. 
Result so far: 175188.0
The remainder is 89 after subtracting 2064 from 2153.
Since there are no more digits in the dividend, we add a zero to the remainder making it 890, and continue the process.

Advancing to step 9:
If we divide 890 by 258, we get 3 and a remainder of 116.
Write down 3 as next digit of the result. 
Result so far: 175188.3
If we subtract 774 from 890, we get 116.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1160, and continue the process.

On to step 10:
The number 258 fits into 1160 4 times, leaving a remainder of 128.
The next digit of our result is 4. 
Result so far: 175188.34
If we take 1032 away from 1160, we end up with 128.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1280, and continue the process.

Advancing to step 11:
258 can be fit into 1280 4 times, resulting in a remainder of 248.
Use 4 as the next digit of our solution. 
Result so far: 175188.344
Subtract 1032 from 1280 to get 248.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2480, and continue the process.

The quotient of the division is 175188.344, and the remainder is 0.0248.