97910021 ÷ 19 
We're looking to find how many times 19 goes into 97910021.

Going ahead to step 1:
19 can be fit into 9 0 times, resulting in a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 9 leaves us with 9.
Fetch the next digit (7) from the dividend, attach it to 9 and continue: 97 / 19

Step 2:
97 divided by 19 is 5 with a remainder of 2.
The next digit of our result is 5. 
Result so far: 5.0
Deduct 95 from 97 and we're left with 2.
Include the next digit (9) from the dividend after 2, then repeat: 29 / 19

Advancing to step 3:
If we divide 29 by 19, we get 1 and a remainder of 10.
Record the quotient 1 as the next digit in the result. 
Result so far: 51.0
Deduct 19 from 29 and we're left with 10.
Bring next digit (1) of the dividend behind the 10 and repeat the process: 101 / 19

Going ahead to step 4:
101 divided by 19 is 5 with a remainder of 6.
Record the quotient 5 as the next digit in the result. 
Result so far: 515.0
If we subtract 95 from 101, we get 6.
Bring next digit (0) of the dividend behind the 6 and repeat the process: 60 / 19

On to step 5:
19 goes into 60 3 times with a remainder of 3.
Put 3 as the next digit of the answer. 
Result so far: 5153.0
Deduct 57 from 60 and we're left with 3.
Bring next digit (0) of the dividend behind the 3 and repeat the process: 30 / 19

Let's proceed to step 6:
30 divided by 19 is 1 with a remainder of 11.
The number 1 becomes the next digit in our result. 
Result so far: 51531.0
Deduct 19 from 30 and we're left with 11.
Take the next digit (2) from the dividend and append it to 11, then repeat: 112 / 19

Advancing to step 7:
19 can be fit into 112 5 times, resulting in a remainder of 17.
The next digit of our result is 5. 
Result so far: 515315.0
Subtract 95 from 112 to get 17.
Fetch the next digit (1) from the dividend, attach it to 17 and continue: 171 / 19

Moving on to step 8:
19 goes into 171 9 times with a remainder of 0.
The number 9 becomes the next digit in our result. 
Result so far: 5153159.0
If we take 171 away from 171, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 9:
0 divided by 19 is 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 5153159.0
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 10:
19 can be fit into 0 0 times, resulting in a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 5153159.0
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

After the division, we end up with 5153159.0 and a remainder of 0.0.