61621620 divided by 543 
We want to figure out the number of times 61621620 can be divided by 543.

On to step 1:
6 divided by 543 is 0 with a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Fetch the next digit (1) from the dividend, attach it to 6 and continue: 61 / 543

Let's proceed to step 2:
543 can be fit into 61 0 times, resulting in a remainder of 61.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 61, we get 61.
Append the next digit (6) from the dividend to 61 and continue with: 616 / 543

Going ahead to step 3:
616 divided by 543 is 1 with a remainder of 73.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Deduct 543 from 616 and we're left with 73.
Grab the next digit (2) from the dividend, add it to 73, then carry on: 732 / 543

Let's proceed to step 4:
543 goes into 732 1 times with a remainder of 189.
The next digit of our result is 1. 
Result so far: 11.0
The remainder is 189 after subtracting 543 from 732.
Include the next digit (1) from the dividend after 189, then repeat: 1891 / 543

On to step 5:
The number 543 fits into 1891 3 times, leaving a remainder of 262.
The next digit of our result is 3. 
Result so far: 113.0
If we take 1629 away from 1891, we end up with 262.
Take the next digit (6) from the dividend and append it to 262, then repeat: 2626 / 543

Moving on to step 6:
If we divide 2626 by 543, we get 4 and a remainder of 454.
Use 4 as the next digit of our solution. 
Result so far: 1134.0
Subtracting 2172 from 2626 leaves us with 454.
Bring next digit (2) of the dividend behind the 454 and repeat the process: 4542 / 543

Step 7:
543 can be fit into 4542 8 times, resulting in a remainder of 198.
Put 8 as the next digit of the answer. 
Result so far: 11348.0
The remainder is 198 after subtracting 4344 from 4542.
Fetch the next digit (0) from the dividend, attach it to 198 and continue: 1980 / 543

Moving on to step 8:
543 goes into 1980 3 times with a remainder of 351.
Put 3 as the next digit of the answer. 
Result so far: 113483.0
If we take 1629 away from 1980, we end up with 351.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3510, and continue the process.

Moving on to step 9:
When dividing 3510 by 543, we get 6 with a remainder of 252.
Put 6 as the next digit of the answer. 
Result so far: 113483.6
Subtract 3258 from 3510 to get 252.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2520, and continue the process.

Moving on to step 10:
When dividing 2520 by 543, we get 4 with a remainder of 348.
The number 4 becomes the next digit in our result. 
Result so far: 113483.64
Subtract 2172 from 2520 to get 348.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3480, and continue the process.

Moving on to step 11:
543 goes into 3480 6 times with a remainder of 222.
The next digit of our result is 6. 
Result so far: 113483.646
If we subtract 3258 from 3480, we get 222.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2220, and continue the process.

Step 12:
The number 543 fits into 2220 4 times, leaving a remainder of 48.
Use 4 as the next digit of our solution. 
Result so far: 113483.6464
Subtracting 2172 from 2220 leaves us with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Going ahead to step 13:
543 goes into 480 0 times with a remainder of 480.
Use 0 as the next digit of our solution. 
Result so far: 113483.6464
If we subtract 0 from 480, we get 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4800, and continue the process.

Step 14:
543 can be fit into 4800 8 times, resulting in a remainder of 456.
Use 8 as the next digit of our solution. 
Result so far: 113483.646408
Subtracting 4344 from 4800 leaves us with 456.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4560, and continue the process.

Advancing to step 15:
543 can be fit into 4560 8 times, resulting in a remainder of 216.
Record the quotient 8 as the next digit in the result. 
Result so far: 113483.6464088
Subtract 4344 from 4560 to get 216.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2160, and continue the process.

The quotient of the division is 113483.6464088, and the remainder is 2.16e-06.