We look at the division of 54933446 by 645 
We're looking to find how many times 645 goes into 54933446.

Let's proceed to step 1:
If we divide 5 by 645, we get 0 and a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Bring next digit (4) of the dividend behind the 5 and repeat the process: 54 / 645

Step 2:
54 divided by 645 is 0 with a remainder of 54.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 54 after subtracting 0 from 54.
Append the next digit (9) from the dividend to 54 and continue with: 549 / 645

Advancing to step 3:
645 can be fit into 549 0 times, resulting in a remainder of 549.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 549, we end up with 549.
Include the next digit (3) from the dividend after 549, then repeat: 5493 / 645

Advancing to step 4:
When dividing 5493 by 645, we get 8 with a remainder of 333.
Write down 8 as next digit of the result. 
Result so far: 8.0
The remainder is 333 after subtracting 5160 from 5493.
Include the next digit (3) from the dividend after 333, then repeat: 3333 / 645

On to step 5:
The number 645 fits into 3333 5 times, leaving a remainder of 108.
The next digit of our result is 5. 
Result so far: 85.0
Deduct 3225 from 3333 and we're left with 108.
Append the next digit (4) from the dividend to 108 and continue with: 1084 / 645

Let's proceed to step 6:
The number 645 fits into 1084 1 times, leaving a remainder of 439.
Record the quotient 1 as the next digit in the result. 
Result so far: 851.0
If we take 645 away from 1084, we end up with 439.
Append the next digit (4) from the dividend to 439 and continue with: 4394 / 645

Step 7:
4394 divided by 645 is 6 with a remainder of 524.
Use 6 as the next digit of our solution. 
Result so far: 8516.0
Subtract 3870 from 4394 to get 524.
Append the next digit (6) from the dividend to 524 and continue with: 5246 / 645

Advancing to step 8:
5246 divided by 645 is 8 with a remainder of 86.
Use 8 as the next digit of our solution. 
Result so far: 85168.0
Subtract 5160 from 5246 to get 86.
Since there are no more digits in the dividend, we add a zero to the remainder making it 860, and continue the process.

Advancing to step 9:
645 can be fit into 860 1 times, resulting in a remainder of 215.
Use 1 as the next digit of our solution. 
Result so far: 85168.1
Subtracting 645 from 860 leaves us with 215.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2150, and continue the process.

Let's proceed to step 10:
When dividing 2150 by 645, we get 3 with a remainder of 215.
The number 3 becomes the next digit in our result. 
Result so far: 85168.13
Subtract 1935 from 2150 to get 215.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2150, and continue the process.

Let's proceed to step 11:
645 goes into 2150 3 times with a remainder of 215.
Use 3 as the next digit of our solution. 
Result so far: 85168.133
Subtracting 1935 from 2150 leaves us with 215.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2150, and continue the process.

After the division, we end up with 85168.133 and a remainder of 0.0215.