97561877 ÷ 621 
We want to figure out the number of times 97561877 can be divided by 621.

Advancing to step 1:
When dividing 9 by 621, we get 0 with a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 9 after subtracting 0 from 9.
Grab the next digit (7) from the dividend, add it to 9, then carry on: 97 / 621

Going ahead to step 2:
621 goes into 97 0 times with a remainder of 97.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 97, we end up with 97.
Include the next digit (5) from the dividend after 97, then repeat: 975 / 621

Step 3:
The number 621 fits into 975 1 times, leaving a remainder of 354.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we subtract 621 from 975, we get 354.
Bring next digit (6) of the dividend behind the 354 and repeat the process: 3546 / 621

Advancing to step 4:
The number 621 fits into 3546 5 times, leaving a remainder of 441.
Use 5 as the next digit of our solution. 
Result so far: 15.0
Subtracting 3105 from 3546 leaves us with 441.
Grab the next digit (1) from the dividend, add it to 441, then carry on: 4411 / 621

Moving on to step 5:
When dividing 4411 by 621, we get 7 with a remainder of 64.
Record the quotient 7 as the next digit in the result. 
Result so far: 157.0
The remainder is 64 after subtracting 4347 from 4411.
Take the next digit (8) from the dividend and append it to 64, then repeat: 648 / 621

Let's proceed to step 6:
When dividing 648 by 621, we get 1 with a remainder of 27.
Write down 1 as next digit of the result. 
Result so far: 1571.0
If we subtract 621 from 648, we get 27.
Include the next digit (7) from the dividend after 27, then repeat: 277 / 621

On to step 7:
The number 621 fits into 277 0 times, leaving a remainder of 277.
The next digit of our result is 0. 
Result so far: 15710.0
Deduct 0 from 277 and we're left with 277.
Include the next digit (7) from the dividend after 277, then repeat: 2777 / 621

Going ahead to step 8:
621 can be fit into 2777 4 times, resulting in a remainder of 293.
Write down 4 as next digit of the result. 
Result so far: 157104.0
Deduct 2484 from 2777 and we're left with 293.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2930, and continue the process.

Let's proceed to step 9:
621 can be fit into 2930 4 times, resulting in a remainder of 446.
Use 4 as the next digit of our solution. 
Result so far: 157104.4
Subtract 2484 from 2930 to get 446.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4460, and continue the process.

Going ahead to step 10:
621 goes into 4460 7 times with a remainder of 113.
Put 7 as the next digit of the answer. 
Result so far: 157104.47
If we take 4347 away from 4460, we end up with 113.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1130, and continue the process.

Step 11:
1130 divided by 621 is 1 with a remainder of 509.
The number 1 becomes the next digit in our result. 
Result so far: 157104.471
If we subtract 621 from 1130, we get 509.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5090, and continue the process.

Step 12:
621 goes into 5090 8 times with a remainder of 122.
Record the quotient 8 as the next digit in the result. 
Result so far: 157104.4718
The remainder is 122 after subtracting 4968 from 5090.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1220, and continue the process.

Advancing to step 13:
621 goes into 1220 1 times with a remainder of 599.
Put 1 as the next digit of the answer. 
Result so far: 157104.47181
Subtracting 621 from 1220 leaves us with 599.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5990, and continue the process.

Going ahead to step 14:
621 goes into 5990 9 times with a remainder of 401.
The next digit of our result is 9. 
Result so far: 157104.471819
Deduct 5589 from 5990 and we're left with 401.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4010, and continue the process.

Let's proceed to step 15:
621 goes into 4010 6 times with a remainder of 284.
The number 6 becomes the next digit in our result. 
Result so far: 157104.4718196
Subtract 3726 from 4010 to get 284.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2840, and continue the process.

Going ahead to step 16:
When dividing 2840 by 621, we get 4 with a remainder of 356.
The next digit of our result is 4. 
Result so far: 157104.47181964
The remainder is 356 after subtracting 2484 from 2840.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3560, and continue the process.

The final result is 157104.47181964 with a remainder of 3.56e-07.