Let's divide 42457214 by 401
The aim is to understand the frequency of 401 in 42457214.

Advancing to step 1:
401 goes into 4 0 times with a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Take the next digit (2) from the dividend and append it to 4, then repeat: 42 / 401

Advancing to step 2:
401 can be fit into 42 0 times, resulting in a remainder of 42.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 42, we end up with 42.
Take the next digit (4) from the dividend and append it to 42, then repeat: 424 / 401

On to step 3:
When dividing 424 by 401, we get 1 with a remainder of 23.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
The remainder is 23 after subtracting 401 from 424.
Include the next digit (5) from the dividend after 23, then repeat: 235 / 401

Advancing to step 4:
401 can be fit into 235 0 times, resulting in a remainder of 235.
Put 0 as the next digit of the answer. 
Result so far: 10.0
If we subtract 0 from 235, we get 235.
Take the next digit (7) from the dividend and append it to 235, then repeat: 2357 / 401

Step 5:
If we divide 2357 by 401, we get 5 and a remainder of 352.
The number 5 becomes the next digit in our result. 
Result so far: 105.0
Deduct 2005 from 2357 and we're left with 352.
Bring next digit (2) of the dividend behind the 352 and repeat the process: 3522 / 401

Step 6:
If we divide 3522 by 401, we get 8 and a remainder of 314.
Use 8 as the next digit of our solution. 
Result so far: 1058.0
Subtracting 3208 from 3522 leaves us with 314.
Append the next digit (1) from the dividend to 314 and continue with: 3141 / 401

Moving on to step 7:
When dividing 3141 by 401, we get 7 with a remainder of 334.
The next digit of our result is 7. 
Result so far: 10587.0
Subtracting 2807 from 3141 leaves us with 334.
Append the next digit (4) from the dividend to 334 and continue with: 3344 / 401

Step 8:
If we divide 3344 by 401, we get 8 and a remainder of 136.
The number 8 becomes the next digit in our result. 
Result so far: 105878.0
Subtracting 3208 from 3344 leaves us with 136.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1360, and continue the process.

Let's proceed to step 9:
1360 divided by 401 is 3 with a remainder of 157.
Put 3 as the next digit of the answer. 
Result so far: 105878.3
Subtracting 1203 from 1360 leaves us with 157.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1570, and continue the process.

On to step 10:
401 can be fit into 1570 3 times, resulting in a remainder of 367.
The number 3 becomes the next digit in our result. 
Result so far: 105878.33
The remainder is 367 after subtracting 1203 from 1570.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3670, and continue the process.

The final result is 105878.33 with a remainder of 0.367.