25211985 ÷ 424 
The aim is to understand the frequency of 424 in 25211985.

Going ahead to step 1:
The number 424 fits into 2 0 times, leaving a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Fetch the next digit (5) from the dividend, attach it to 2 and continue: 25 / 424

Moving on to step 2:
424 goes into 25 0 times with a remainder of 25.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 25 leaves us with 25.
Bring next digit (2) of the dividend behind the 25 and repeat the process: 252 / 424

On to step 3:
424 goes into 252 0 times with a remainder of 252.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 252 after subtracting 0 from 252.
Grab the next digit (1) from the dividend, add it to 252, then carry on: 2521 / 424

Going ahead to step 4:
2521 divided by 424 is 5 with a remainder of 401.
Write down 5 as next digit of the result. 
Result so far: 5.0
Subtract 2120 from 2521 to get 401.
Bring next digit (1) of the dividend behind the 401 and repeat the process: 4011 / 424

Going ahead to step 5:
If we divide 4011 by 424, we get 9 and a remainder of 195.
The number 9 becomes the next digit in our result. 
Result so far: 59.0
Deduct 3816 from 4011 and we're left with 195.
Bring next digit (9) of the dividend behind the 195 and repeat the process: 1959 / 424

Advancing to step 6:
424 goes into 1959 4 times with a remainder of 263.
Use 4 as the next digit of our solution. 
Result so far: 594.0
The remainder is 263 after subtracting 1696 from 1959.
Grab the next digit (8) from the dividend, add it to 263, then carry on: 2638 / 424

On to step 7:
If we divide 2638 by 424, we get 6 and a remainder of 94.
The next digit of our result is 6. 
Result so far: 5946.0
Subtracting 2544 from 2638 leaves us with 94.
Take the next digit (5) from the dividend and append it to 94, then repeat: 945 / 424

On to step 8:
When dividing 945 by 424, we get 2 with a remainder of 97.
The number 2 becomes the next digit in our result. 
Result so far: 59462.0
The remainder is 97 after subtracting 848 from 945.
Since there are no more digits in the dividend, we add a zero to the remainder making it 970, and continue the process.

Advancing to step 9:
424 goes into 970 2 times with a remainder of 122.
The next digit of our result is 2. 
Result so far: 59462.2
Subtracting 848 from 970 leaves us with 122.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1220, and continue the process.

Advancing to step 10:
424 can be fit into 1220 2 times, resulting in a remainder of 372.
Record the quotient 2 as the next digit in the result. 
Result so far: 59462.22
If we subtract 848 from 1220, we get 372.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3720, and continue the process.

The quotient of the division is 59462.22, and the remainder is 0.372.