91618369 divided by 578 
Let's see how many times 578 fits into 91618369.

On to step 1:
9 divided by 578 is 0 with a remainder of 9.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 9, we get 9.
Include the next digit (1) from the dividend after 9, then repeat: 91 / 578

Moving on to step 2:
The number 578 fits into 91 0 times, leaving a remainder of 91.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 91 and we're left with 91.
Append the next digit (6) from the dividend to 91 and continue with: 916 / 578

Let's proceed to step 3:
If we divide 916 by 578, we get 1 and a remainder of 338.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtracting 578 from 916 leaves us with 338.
Fetch the next digit (1) from the dividend, attach it to 338 and continue: 3381 / 578

Moving on to step 4:
The number 578 fits into 3381 5 times, leaving a remainder of 491.
Write down 5 as next digit of the result. 
Result so far: 15.0
The remainder is 491 after subtracting 2890 from 3381.
Include the next digit (8) from the dividend after 491, then repeat: 4918 / 578

Let's proceed to step 5:
When dividing 4918 by 578, we get 8 with a remainder of 294.
Record the quotient 8 as the next digit in the result. 
Result so far: 158.0
If we take 4624 away from 4918, we end up with 294.
Take the next digit (3) from the dividend and append it to 294, then repeat: 2943 / 578

Moving on to step 6:
2943 divided by 578 is 5 with a remainder of 53.
Record the quotient 5 as the next digit in the result. 
Result so far: 1585.0
If we take 2890 away from 2943, we end up with 53.
Fetch the next digit (6) from the dividend, attach it to 53 and continue: 536 / 578

Moving on to step 7:
If we divide 536 by 578, we get 0 and a remainder of 536.
Record the quotient 0 as the next digit in the result. 
Result so far: 15850.0
Subtract 0 from 536 to get 536.
Take the next digit (9) from the dividend and append it to 536, then repeat: 5369 / 578

Moving on to step 8:
If we divide 5369 by 578, we get 9 and a remainder of 167.
Record the quotient 9 as the next digit in the result. 
Result so far: 158509.0
The remainder is 167 after subtracting 5202 from 5369.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1670, and continue the process.

Going ahead to step 9:
If we divide 1670 by 578, we get 2 and a remainder of 514.
Write down 2 as next digit of the result. 
Result so far: 158509.2
Subtracting 1156 from 1670 leaves us with 514.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5140, and continue the process.

Moving on to step 10:
578 goes into 5140 8 times with a remainder of 516.
Put 8 as the next digit of the answer. 
Result so far: 158509.28
The remainder is 516 after subtracting 4624 from 5140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5160, and continue the process.

Let's proceed to step 11:
578 can be fit into 5160 8 times, resulting in a remainder of 536.
Use 8 as the next digit of our solution. 
Result so far: 158509.288
The remainder is 536 after subtracting 4624 from 5160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5360, and continue the process.

Our division results in 158509.288 with a remaining 0.0536.