We look at the division of 58624221 by 648 
Let's see how many times 648 fits into 58624221.

Let's proceed to step 1:
648 can be fit into 5 0 times, resulting in a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Grab the next digit (8) from the dividend, add it to 5, then carry on: 58 / 648

Moving on to step 2:
648 can be fit into 58 0 times, resulting in a remainder of 58.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 58 to get 58.
Fetch the next digit (6) from the dividend, attach it to 58 and continue: 586 / 648

Step 3:
648 can be fit into 586 0 times, resulting in a remainder of 586.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 586 to get 586.
Append the next digit (2) from the dividend to 586 and continue with: 5862 / 648

Step 4:
The number 648 fits into 5862 9 times, leaving a remainder of 30.
The number 9 becomes the next digit in our result. 
Result so far: 9.0
The remainder is 30 after subtracting 5832 from 5862.
Append the next digit (4) from the dividend to 30 and continue with: 304 / 648

Moving on to step 5:
648 goes into 304 0 times with a remainder of 304.
Record the quotient 0 as the next digit in the result. 
Result so far: 90.0
If we subtract 0 from 304, we get 304.
Fetch the next digit (2) from the dividend, attach it to 304 and continue: 3042 / 648

Moving on to step 6:
When dividing 3042 by 648, we get 4 with a remainder of 450.
Record the quotient 4 as the next digit in the result. 
Result so far: 904.0
Subtract 2592 from 3042 to get 450.
Take the next digit (2) from the dividend and append it to 450, then repeat: 4502 / 648

Moving on to step 7:
648 can be fit into 4502 6 times, resulting in a remainder of 614.
Use 6 as the next digit of our solution. 
Result so far: 9046.0
If we subtract 3888 from 4502, we get 614.
Bring next digit (1) of the dividend behind the 614 and repeat the process: 6141 / 648

Going ahead to step 8:
648 goes into 6141 9 times with a remainder of 309.
The number 9 becomes the next digit in our result. 
Result so far: 90469.0
If we subtract 5832 from 6141, we get 309.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3090, and continue the process.

Moving on to step 9:
648 goes into 3090 4 times with a remainder of 498.
The number 4 becomes the next digit in our result. 
Result so far: 90469.4
Subtract 2592 from 3090 to get 498.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4980, and continue the process.

On to step 10:
The number 648 fits into 4980 7 times, leaving a remainder of 444.
Write down 7 as next digit of the result. 
Result so far: 90469.47
Deduct 4536 from 4980 and we're left with 444.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4440, and continue the process.

Advancing to step 11:
4440 divided by 648 is 6 with a remainder of 552.
Put 6 as the next digit of the answer. 
Result so far: 90469.476
The remainder is 552 after subtracting 3888 from 4440.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5520, and continue the process.

Going ahead to step 12:
The number 648 fits into 5520 8 times, leaving a remainder of 336.
The number 8 becomes the next digit in our result. 
Result so far: 90469.4768
The remainder is 336 after subtracting 5184 from 5520.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3360, and continue the process.

Going ahead to step 13:
The number 648 fits into 3360 5 times, leaving a remainder of 120.
The next digit of our result is 5. 
Result so far: 90469.47685
Deduct 3240 from 3360 and we're left with 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

Going ahead to step 14:
The number 648 fits into 1200 1 times, leaving a remainder of 552.
The number 1 becomes the next digit in our result. 
Result so far: 90469.476851
If we take 648 away from 1200, we end up with 552.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5520, and continue the process.

Moving on to step 15:
The number 648 fits into 5520 8 times, leaving a remainder of 336.
The next digit of our result is 8. 
Result so far: 90469.4768518
Subtract 5184 from 5520 to get 336.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3360, and continue the process.

Let's proceed to step 16:
648 can be fit into 3360 5 times, resulting in a remainder of 120.
Record the quotient 5 as the next digit in the result. 
Result so far: 90469.47685185
Subtract 3240 from 3360 to get 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

After the division, we end up with 90469.47685185 and a remainder of 1.2e-07.