628194 ÷ 21 
We're looking to find how many times 21 goes into 628194.

Let's proceed to step 1:
6 divided by 21 is 0 with a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Bring next digit (2) of the dividend behind the 6 and repeat the process: 62 / 21

Step 2:
62 divided by 21 is 2 with a remainder of 20.
Use 2 as the next digit of our solution. 
Result so far: 2.0
If we subtract 42 from 62, we get 20.
Grab the next digit (8) from the dividend, add it to 20, then carry on: 208 / 21

Going ahead to step 3:
The number 21 fits into 208 9 times, leaving a remainder of 19.
The number 9 becomes the next digit in our result. 
Result so far: 29.0
The remainder is 19 after subtracting 189 from 208.
Fetch the next digit (1) from the dividend, attach it to 19 and continue: 191 / 21

Advancing to step 4:
When dividing 191 by 21, we get 9 with a remainder of 2.
Put 9 as the next digit of the answer. 
Result so far: 299.0
Subtract 189 from 191 to get 2.
Append the next digit (9) from the dividend to 2 and continue with: 29 / 21

On to step 5:
When dividing 29 by 21, we get 1 with a remainder of 8.
The number 1 becomes the next digit in our result. 
Result so far: 2991.0
Subtracting 21 from 29 leaves us with 8.
Append the next digit (4) from the dividend to 8 and continue with: 84 / 21

Let's proceed to step 6:
If we divide 84 by 21, we get 4 and a remainder of 0.
Write down 4 as next digit of the result. 
Result so far: 29914.0
If we take 84 away from 84, 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.

Let's proceed to step 7:
21 goes into 0 0 times with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 29914.0
The remainder is 0 after subtracting 0 from 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 8:
0 divided by 21 is 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 29914.0
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.

The final outcome is 29914.0, with a leftover of 0.0.