66189621 ÷ 619 
We want to figure out the number of times 66189621 can be divided by 619.

Moving on to step 1:
The number 619 fits into 6 0 times, leaving a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Append the next digit (6) from the dividend to 6 and continue with: 66 / 619

Let's proceed to step 2:
66 divided by 619 is 0 with a remainder of 66.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 66 and we're left with 66.
Include the next digit (1) from the dividend after 66, then repeat: 661 / 619

Going ahead to step 3:
If we divide 661 by 619, we get 1 and a remainder of 42.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we subtract 619 from 661, we get 42.
Grab the next digit (8) from the dividend, add it to 42, then carry on: 428 / 619

Step 4:
If we divide 428 by 619, we get 0 and a remainder of 428.
The number 0 becomes the next digit in our result. 
Result so far: 10.0
Deduct 0 from 428 and we're left with 428.
Bring next digit (9) of the dividend behind the 428 and repeat the process: 4289 / 619

Let's proceed to step 5:
The number 619 fits into 4289 6 times, leaving a remainder of 575.
Use 6 as the next digit of our solution. 
Result so far: 106.0
Subtract 3714 from 4289 to get 575.
Include the next digit (6) from the dividend after 575, then repeat: 5756 / 619

Going ahead to step 6:
When dividing 5756 by 619, we get 9 with a remainder of 185.
Record the quotient 9 as the next digit in the result. 
Result so far: 1069.0
The remainder is 185 after subtracting 5571 from 5756.
Fetch the next digit (2) from the dividend, attach it to 185 and continue: 1852 / 619

On to step 7:
If we divide 1852 by 619, we get 2 and a remainder of 614.
Record the quotient 2 as the next digit in the result. 
Result so far: 10692.0
The remainder is 614 after subtracting 1238 from 1852.
Grab the next digit (1) from the dividend, add it to 614, then carry on: 6141 / 619

Moving on to step 8:
When dividing 6141 by 619, we get 9 with a remainder of 570.
Write down 9 as next digit of the result. 
Result so far: 106929.0
Deduct 5571 from 6141 and we're left with 570.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5700, and continue the process.

Advancing to step 9:
The number 619 fits into 5700 9 times, leaving a remainder of 129.
Put 9 as the next digit of the answer. 
Result so far: 106929.9
If we take 5571 away from 5700, we end up with 129.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1290, and continue the process.

Going ahead to step 10:
If we divide 1290 by 619, we get 2 and a remainder of 52.
Use 2 as the next digit of our solution. 
Result so far: 106929.92
Subtracting 1238 from 1290 leaves us with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Let's proceed to step 11:
When dividing 520 by 619, we get 0 with a remainder of 520.
Put 0 as the next digit of the answer. 
Result so far: 106929.92
If we subtract 0 from 520, we get 520.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5200, and continue the process.

Going ahead to step 12:
619 goes into 5200 8 times with a remainder of 248.
Record the quotient 8 as the next digit in the result. 
Result so far: 106929.9208
Deduct 4952 from 5200 and we're left with 248.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2480, and continue the process.

Advancing to step 13:
619 can be fit into 2480 4 times, resulting in a remainder of 4.
The number 4 becomes the next digit in our result. 
Result so far: 106929.92084
If we subtract 2476 from 2480, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Step 14:
40 divided by 619 is 0 with a remainder of 40.
The number 0 becomes the next digit in our result. 
Result so far: 106929.92084
If we take 0 away from 40, we end up with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Moving on to step 15:
619 goes into 400 0 times with a remainder of 400.
The number 0 becomes the next digit in our result. 
Result so far: 106929.92084
The remainder is 400 after subtracting 0 from 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

After the division, we end up with 106929.92084 and a remainder of 4e-06.