We look at the division of 90870394 by 545 
We're looking to find how many times 545 goes into 90870394.

Moving on to step 1:
545 goes into 9 0 times with a remainder of 9.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 9, we get 9.
Grab the next digit (0) from the dividend, add it to 9, then carry on: 90 / 545

Advancing to step 2:
545 can be fit into 90 0 times, resulting in a remainder of 90.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 90 after subtracting 0 from 90.
Fetch the next digit (8) from the dividend, attach it to 90 and continue: 908 / 545

Advancing to step 3:
545 can be fit into 908 1 times, resulting in a remainder of 363.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we subtract 545 from 908, we get 363.
Fetch the next digit (7) from the dividend, attach it to 363 and continue: 3637 / 545

On to step 4:
If we divide 3637 by 545, we get 6 and a remainder of 367.
Record the quotient 6 as the next digit in the result. 
Result so far: 16.0
Subtract 3270 from 3637 to get 367.
Append the next digit (0) from the dividend to 367 and continue with: 3670 / 545

On to step 5:
545 can be fit into 3670 6 times, resulting in a remainder of 400.
Use 6 as the next digit of our solution. 
Result so far: 166.0
Deduct 3270 from 3670 and we're left with 400.
Include the next digit (3) from the dividend after 400, then repeat: 4003 / 545

Going ahead to step 6:
545 goes into 4003 7 times with a remainder of 188.
Record the quotient 7 as the next digit in the result. 
Result so far: 1667.0
If we take 3815 away from 4003, we end up with 188.
Grab the next digit (9) from the dividend, add it to 188, then carry on: 1889 / 545

Let's proceed to step 7:
1889 divided by 545 is 3 with a remainder of 254.
The number 3 becomes the next digit in our result. 
Result so far: 16673.0
Deduct 1635 from 1889 and we're left with 254.
Append the next digit (4) from the dividend to 254 and continue with: 2544 / 545

Moving on to step 8:
If we divide 2544 by 545, we get 4 and a remainder of 364.
Use 4 as the next digit of our solution. 
Result so far: 166734.0
Subtract 2180 from 2544 to get 364.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3640, and continue the process.

Let's proceed to step 9:
545 goes into 3640 6 times with a remainder of 370.
Use 6 as the next digit of our solution. 
Result so far: 166734.6
If we take 3270 away from 3640, we end up with 370.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3700, and continue the process.

Moving on to step 10:
545 can be fit into 3700 6 times, resulting in a remainder of 430.
Write down 6 as next digit of the result. 
Result so far: 166734.66
The remainder is 430 after subtracting 3270 from 3700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4300, and continue the process.

Our division results in 166734.66 with a remaining 0.43.