We look at the division of 545409 by 91 
We want to figure out the number of times 545409 can be divided by 91.

On to step 1:
When dividing 5 by 91, we get 0 with a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Fetch the next digit (4) from the dividend, attach it to 5 and continue: 54 / 91

On to step 2:
When dividing 54 by 91, we get 0 with a remainder of 54.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 54, we get 54.
Fetch the next digit (5) from the dividend, attach it to 54 and continue: 545 / 91

Going ahead to step 3:
If we divide 545 by 91, we get 5 and a remainder of 90.
Put 5 as the next digit of the answer. 
Result so far: 5.0
Deduct 455 from 545 and we're left with 90.
Grab the next digit (4) from the dividend, add it to 90, then carry on: 904 / 91

Let's proceed to step 4:
The number 91 fits into 904 9 times, leaving a remainder of 85.
Record the quotient 9 as the next digit in the result. 
Result so far: 59.0
Deduct 819 from 904 and we're left with 85.
Grab the next digit (0) from the dividend, add it to 85, then carry on: 850 / 91

Step 5:
850 divided by 91 is 9 with a remainder of 31.
Record the quotient 9 as the next digit in the result. 
Result so far: 599.0
If we subtract 819 from 850, we get 31.
Take the next digit (9) from the dividend and append it to 31, then repeat: 319 / 91

Step 6:
The number 91 fits into 319 3 times, leaving a remainder of 46.
The next digit of our result is 3. 
Result so far: 5993.0
Subtract 273 from 319 to get 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Let's proceed to step 7:
91 can be fit into 460 5 times, resulting in a remainder of 5.
Record the quotient 5 as the next digit in the result. 
Result so far: 5993.5
If we subtract 455 from 460, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Let's proceed to step 8:
The number 91 fits into 50 0 times, leaving a remainder of 50.
The number 0 becomes the next digit in our result. 
Result so far: 5993.5
Deduct 0 from 50 and we're left with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Moving on to step 9:
If we divide 500 by 91, we get 5 and a remainder of 45.
Record the quotient 5 as the next digit in the result. 
Result so far: 5993.505
Deduct 455 from 500 and we're left with 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Let's proceed to step 10:
When dividing 450 by 91, we get 4 with a remainder of 86.
The number 4 becomes the next digit in our result. 
Result so far: 5993.5054
The remainder is 86 after subtracting 364 from 450.
Since there are no more digits in the dividend, we add a zero to the remainder making it 860, and continue the process.

Going ahead to step 11:
91 goes into 860 9 times with a remainder of 41.
Put 9 as the next digit of the answer. 
Result so far: 5993.50549
Deduct 819 from 860 and we're left with 41.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

Let's proceed to step 12:
91 can be fit into 410 4 times, resulting in a remainder of 46.
Put 4 as the next digit of the answer. 
Result so far: 5993.505494
Deduct 364 from 410 and we're left with 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Advancing to step 13:
91 can be fit into 460 5 times, resulting in a remainder of 5.
Record the quotient 5 as the next digit in the result. 
Result so far: 5993.5054945
If we subtract 455 from 460, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Let's proceed to step 14:
If we divide 50 by 91, we get 0 and a remainder of 50.
Write down 0 as next digit of the result. 
Result so far: 5993.5054945
Deduct 0 from 50 and we're left with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Our division results in 5993.5054945 with a remaining 5e-08.