19473569 ÷ 648 
We're looking to find how many times 648 goes into 19473569.

On to step 1:
The number 648 fits into 1 0 times, leaving a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Bring next digit (9) of the dividend behind the 1 and repeat the process: 19 / 648

Moving on to step 2:
19 divided by 648 is 0 with a remainder of 19.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 19, we end up with 19.
Grab the next digit (4) from the dividend, add it to 19, then carry on: 194 / 648

Moving on to step 3:
The number 648 fits into 194 0 times, leaving a remainder of 194.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 194 and we're left with 194.
Grab the next digit (7) from the dividend, add it to 194, then carry on: 1947 / 648

Advancing to step 4:
When dividing 1947 by 648, we get 3 with a remainder of 3.
The next digit of our result is 3. 
Result so far: 3.0
The remainder is 3 after subtracting 1944 from 1947.
Append the next digit (3) from the dividend to 3 and continue with: 33 / 648

Let's proceed to step 5:
648 goes into 33 0 times with a remainder of 33.
Put 0 as the next digit of the answer. 
Result so far: 30.0
Subtract 0 from 33 to get 33.
Include the next digit (5) from the dividend after 33, then repeat: 335 / 648

Moving on to step 6:
335 divided by 648 is 0 with a remainder of 335.
Use 0 as the next digit of our solution. 
Result so far: 300.0
Subtract 0 from 335 to get 335.
Take the next digit (6) from the dividend and append it to 335, then repeat: 3356 / 648

On to step 7:
648 can be fit into 3356 5 times, resulting in a remainder of 116.
Put 5 as the next digit of the answer. 
Result so far: 3005.0
Subtract 3240 from 3356 to get 116.
Fetch the next digit (9) from the dividend, attach it to 116 and continue: 1169 / 648

Let's proceed to step 8:
When dividing 1169 by 648, we get 1 with a remainder of 521.
The next digit of our result is 1. 
Result so far: 30051.0
Subtract 648 from 1169 to get 521.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5210, and continue the process.

On to step 9:
When dividing 5210 by 648, we get 8 with a remainder of 26.
Record the quotient 8 as the next digit in the result. 
Result so far: 30051.8
If we take 5184 away from 5210, we end up with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Moving on to step 10:
260 divided by 648 is 0 with a remainder of 260.
Write down 0 as next digit of the result. 
Result so far: 30051.8
The remainder is 260 after subtracting 0 from 260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2600, and continue the process.

Let's proceed to step 11:
The number 648 fits into 2600 4 times, leaving a remainder of 8.
The next digit of our result is 4. 
Result so far: 30051.804
The remainder is 8 after subtracting 2592 from 2600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Moving on to step 12:
When dividing 80 by 648, we get 0 with a remainder of 80.
The next digit of our result is 0. 
Result so far: 30051.804
Deduct 0 from 80 and we're left with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Moving on to step 13:
800 divided by 648 is 1 with a remainder of 152.
Use 1 as the next digit of our solution. 
Result so far: 30051.80401
The remainder is 152 after subtracting 648 from 800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1520, and continue the process.

Going ahead to step 14:
If we divide 1520 by 648, we get 2 and a remainder of 224.
The number 2 becomes the next digit in our result. 
Result so far: 30051.804012
Subtract 1296 from 1520 to get 224.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2240, and continue the process.

On to step 15:
When dividing 2240 by 648, we get 3 with a remainder of 296.
Put 3 as the next digit of the answer. 
Result so far: 30051.8040123
Subtracting 1944 from 2240 leaves us with 296.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2960, and continue the process.

On to step 16:
If we divide 2960 by 648, we get 4 and a remainder of 368.
Use 4 as the next digit of our solution. 
Result so far: 30051.80401234
If we take 2592 away from 2960, we end up with 368.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3680, and continue the process.

The final outcome is 30051.80401234, with a leftover of 3.68e-07.