621970 divided by 16 
We're looking to find how many times 16 goes into 621970.

Let's proceed to step 1:
The number 16 fits into 6 0 times, leaving a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Take the next digit (2) from the dividend and append it to 6, then repeat: 62 / 16

Step 2:
When dividing 62 by 16, we get 3 with a remainder of 14.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
Subtract 48 from 62 to get 14.
Grab the next digit (1) from the dividend, add it to 14, then carry on: 141 / 16

Advancing to step 3:
When dividing 141 by 16, we get 8 with a remainder of 13.
The number 8 becomes the next digit in our result. 
Result so far: 38.0
Subtract 128 from 141 to get 13.
Bring next digit (9) of the dividend behind the 13 and repeat the process: 139 / 16

Let's proceed to step 4:
16 can be fit into 139 8 times, resulting in a remainder of 11.
Record the quotient 8 as the next digit in the result. 
Result so far: 388.0
Subtract 128 from 139 to get 11.
Take the next digit (7) from the dividend and append it to 11, then repeat: 117 / 16

Advancing to step 5:
117 divided by 16 is 7 with a remainder of 5.
Use 7 as the next digit of our solution. 
Result so far: 3887.0
Subtracting 112 from 117 leaves us with 5.
Append the next digit (0) from the dividend to 5 and continue with: 50 / 16

Moving on to step 6:
The number 16 fits into 50 3 times, leaving a remainder of 2.
The next digit of our result is 3. 
Result so far: 38873.0
Subtract 48 from 50 to get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Step 7:
16 can be fit into 20 1 times, resulting in a remainder of 4.
The number 1 becomes the next digit in our result. 
Result so far: 38873.1
Subtract 16 from 20 to 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 8:
40 divided by 16 is 2 with a remainder of 8.
Write down 2 as next digit of the result. 
Result so far: 38873.12
If we subtract 32 from 40, we get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

On to step 9:
The number 16 fits into 80 5 times, leaving a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 38873.125
If we take 80 away from 80, 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.

Moving on to step 10:
16 can be fit into 0 0 times, resulting in a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 38873.125
Subtracting 0 from 0 leaves us 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 11:
0 divided by 16 is 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 38873.125
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 38873.125 and a remainder of 0.0.