70760938 ÷ 421 
The aim is to understand the frequency of 421 in 70760938.

Going ahead to step 1:
421 goes into 7 0 times with a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Append the next digit (0) from the dividend to 7 and continue with: 70 / 421

Let's proceed to step 2:
When dividing 70 by 421, we get 0 with a remainder of 70.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 70 leaves us with 70.
Bring next digit (7) of the dividend behind the 70 and repeat the process: 707 / 421

Moving on to step 3:
421 can be fit into 707 1 times, resulting in a remainder of 286.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Deduct 421 from 707 and we're left with 286.
Fetch the next digit (6) from the dividend, attach it to 286 and continue: 2866 / 421

Moving on to step 4:
421 goes into 2866 6 times with a remainder of 340.
Record the quotient 6 as the next digit in the result. 
Result so far: 16.0
The remainder is 340 after subtracting 2526 from 2866.
Take the next digit (0) from the dividend and append it to 340, then repeat: 3400 / 421

On to step 5:
When dividing 3400 by 421, we get 8 with a remainder of 32.
The number 8 becomes the next digit in our result. 
Result so far: 168.0
The remainder is 32 after subtracting 3368 from 3400.
Bring next digit (9) of the dividend behind the 32 and repeat the process: 329 / 421

Step 6:
421 can be fit into 329 0 times, resulting in a remainder of 329.
Record the quotient 0 as the next digit in the result. 
Result so far: 1680.0
Deduct 0 from 329 and we're left with 329.
Fetch the next digit (3) from the dividend, attach it to 329 and continue: 3293 / 421

Step 7:
421 can be fit into 3293 7 times, resulting in a remainder of 346.
The next digit of our result is 7. 
Result so far: 16807.0
Deduct 2947 from 3293 and we're left with 346.
Bring next digit (8) of the dividend behind the 346 and repeat the process: 3468 / 421

Going ahead to step 8:
421 goes into 3468 8 times with a remainder of 100.
The number 8 becomes the next digit in our result. 
Result so far: 168078.0
The remainder is 100 after subtracting 3368 from 3468.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Advancing to step 9:
If we divide 1000 by 421, we get 2 and a remainder of 158.
Put 2 as the next digit of the answer. 
Result so far: 168078.2
The remainder is 158 after subtracting 842 from 1000.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1580, and continue the process.

Going ahead to step 10:
When dividing 1580 by 421, we get 3 with a remainder of 317.
The next digit of our result is 3. 
Result so far: 168078.23
The remainder is 317 after subtracting 1263 from 1580.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3170, and continue the process.

Moving on to step 11:
If we divide 3170 by 421, we get 7 and a remainder of 223.
Record the quotient 7 as the next digit in the result. 
Result so far: 168078.237
Subtract 2947 from 3170 to get 223.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2230, and continue the process.

Step 12:
421 can be fit into 2230 5 times, resulting in a remainder of 125.
Write down 5 as next digit of the result. 
Result so far: 168078.2375
Subtracting 2105 from 2230 leaves us with 125.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1250, and continue the process.

Step 13:
1250 divided by 421 is 2 with a remainder of 408.
Use 2 as the next digit of our solution. 
Result so far: 168078.23752
Subtracting 842 from 1250 leaves us with 408.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4080, and continue the process.

On to step 14:
If we divide 4080 by 421, we get 9 and a remainder of 291.
The number 9 becomes the next digit in our result. 
Result so far: 168078.237529
Subtracting 3789 from 4080 leaves us with 291.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2910, and continue the process.

Moving on to step 15:
If we divide 2910 by 421, we get 6 and a remainder of 384.
Record the quotient 6 as the next digit in the result. 
Result so far: 168078.2375296
Deduct 2526 from 2910 and we're left with 384.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3840, and continue the process.

Step 16:
When dividing 3840 by 421, we get 9 with a remainder of 51.
Record the quotient 9 as the next digit in the result. 
Result so far: 168078.23752969
Deduct 3789 from 3840 and we're left with 51.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

Our division results in 168078.23752969 with a remaining 5.1e-08.