55053526 ÷ 645 
Let's see how many times 645 fits into 55053526.

On to step 1:
If we divide 5 by 645, we get 0 and a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Take the next digit (5) from the dividend and append it to 5, then repeat: 55 / 645

Advancing to step 2:
The number 645 fits into 55 0 times, leaving a remainder of 55.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 55, we end up with 55.
Grab the next digit (0) from the dividend, add it to 55, then carry on: 550 / 645

Advancing to step 3:
The number 645 fits into 550 0 times, leaving a remainder of 550.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 550 leaves us with 550.
Append the next digit (5) from the dividend to 550 and continue with: 5505 / 645

Let's proceed to step 4:
645 goes into 5505 8 times with a remainder of 345.
Write down 8 as next digit of the result. 
Result so far: 8.0
Subtract 5160 from 5505 to get 345.
Append the next digit (3) from the dividend to 345 and continue with: 3453 / 645

On to step 5:
The number 645 fits into 3453 5 times, leaving a remainder of 228.
Put 5 as the next digit of the answer. 
Result so far: 85.0
If we subtract 3225 from 3453, we get 228.
Bring next digit (5) of the dividend behind the 228 and repeat the process: 2285 / 645

Going ahead to step 6:
When dividing 2285 by 645, we get 3 with a remainder of 350.
Use 3 as the next digit of our solution. 
Result so far: 853.0
Subtracting 1935 from 2285 leaves us with 350.
Grab the next digit (2) from the dividend, add it to 350, then carry on: 3502 / 645

Going ahead to step 7:
The number 645 fits into 3502 5 times, leaving a remainder of 277.
The number 5 becomes the next digit in our result. 
Result so far: 8535.0
Subtracting 3225 from 3502 leaves us with 277.
Include the next digit (6) from the dividend after 277, then repeat: 2776 / 645

Going ahead to step 8:
645 can be fit into 2776 4 times, resulting in a remainder of 196.
The number 4 becomes the next digit in our result. 
Result so far: 85354.0
Deduct 2580 from 2776 and we're left with 196.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1960, and continue the process.

Advancing to step 9:
If we divide 1960 by 645, we get 3 and a remainder of 25.
Write down 3 as next digit of the result. 
Result so far: 85354.3
The remainder is 25 after subtracting 1935 from 1960.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Step 10:
645 can be fit into 250 0 times, resulting in a remainder of 250.
Record the quotient 0 as the next digit in the result. 
Result so far: 85354.3
If we subtract 0 from 250, we get 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2500, and continue the process.

Advancing to step 11:
When dividing 2500 by 645, we get 3 with a remainder of 565.
Record the quotient 3 as the next digit in the result. 
Result so far: 85354.303
Subtracting 1935 from 2500 leaves us with 565.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5650, and continue the process.

Advancing to step 12:
When dividing 5650 by 645, we get 8 with a remainder of 490.
Put 8 as the next digit of the answer. 
Result so far: 85354.3038
If we subtract 5160 from 5650, we get 490.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4900, and continue the process.

On to step 13:
The number 645 fits into 4900 7 times, leaving a remainder of 385.
Write down 7 as next digit of the result. 
Result so far: 85354.30387
Subtract 4515 from 4900 to get 385.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3850, and continue the process.

Advancing to step 14:
If we divide 3850 by 645, we get 5 and a remainder of 625.
Use 5 as the next digit of our solution. 
Result so far: 85354.303875
If we take 3225 away from 3850, we end up with 625.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6250, and continue the process.

On to step 15:
When dividing 6250 by 645, we get 9 with a remainder of 445.
Record the quotient 9 as the next digit in the result. 
Result so far: 85354.3038759
Deduct 5805 from 6250 and we're left with 445.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4450, and continue the process.

Step 16:
645 can be fit into 4450 6 times, resulting in a remainder of 580.
Use 6 as the next digit of our solution. 
Result so far: 85354.30387596
Deduct 3870 from 4450 and we're left with 580.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5800, and continue the process.

Our division results in 85354.30387596 with a remaining 5.8e-07.