719921 ÷ 50 
The aim is to understand the frequency of 50 in 719921.

Let's proceed to step 1:
When dividing 7 by 50, we get 0 with a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Take the next digit (1) from the dividend and append it to 7, then repeat: 71 / 50

On to step 2:
50 can be fit into 71 1 times, resulting in a remainder of 21.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtracting 50 from 71 leaves us with 21.
Fetch the next digit (9) from the dividend, attach it to 21 and continue: 219 / 50

On to step 3:
When dividing 219 by 50, we get 4 with a remainder of 19.
The next digit of our result is 4. 
Result so far: 14.0
Subtracting 200 from 219 leaves us with 19.
Fetch the next digit (9) from the dividend, attach it to 19 and continue: 199 / 50

Going ahead to step 4:
When dividing 199 by 50, we get 3 with a remainder of 49.
Record the quotient 3 as the next digit in the result. 
Result so far: 143.0
Subtracting 150 from 199 leaves us with 49.
Grab the next digit (2) from the dividend, add it to 49, then carry on: 492 / 50

Advancing to step 5:
50 goes into 492 9 times with a remainder of 42.
The number 9 becomes the next digit in our result. 
Result so far: 1439.0
Subtracting 450 from 492 leaves us with 42.
Grab the next digit (1) from the dividend, add it to 42, then carry on: 421 / 50

On to step 6:
If we divide 421 by 50, we get 8 and a remainder of 21.
Record the quotient 8 as the next digit in the result. 
Result so far: 14398.0
Subtract 400 from 421 to get 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Advancing to step 7:
50 can be fit into 210 4 times, resulting in a remainder of 10.
The number 4 becomes the next digit in our result. 
Result so far: 14398.4
Subtract 200 from 210 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Let's proceed to step 8:
When dividing 100 by 50, we get 2 with a remainder of 0.
Put 2 as the next digit of the answer. 
Result so far: 14398.42
Subtract 100 from 100 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.

On to step 9:
When dividing 0 by 50, we get 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 14398.42
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.

Let's proceed to step 10:
The number 50 fits into 0 0 times, leaving a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 14398.42
If we subtract 0 from 0, we 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 14398.42 and a remainder of 0.0.