70309018 ÷ 851 
The aim is to understand the frequency of 851 in 70309018.

Advancing to step 1:
If we divide 7 by 851, we get 0 and a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Bring next digit (0) of the dividend behind the 7 and repeat the process: 70 / 851

Advancing to step 2:
851 goes into 70 0 times with a remainder of 70.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 70 after subtracting 0 from 70.
Grab the next digit (3) from the dividend, add it to 70, then carry on: 703 / 851

Going ahead to step 3:
If we divide 703 by 851, we get 0 and a remainder of 703.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 703 and we're left with 703.
Take the next digit (0) from the dividend and append it to 703, then repeat: 7030 / 851

On to step 4:
7030 divided by 851 is 8 with a remainder of 222.
Write down 8 as next digit of the result. 
Result so far: 8.0
The remainder is 222 after subtracting 6808 from 7030.
Grab the next digit (9) from the dividend, add it to 222, then carry on: 2229 / 851

Moving on to step 5:
851 can be fit into 2229 2 times, resulting in a remainder of 527.
Write down 2 as next digit of the result. 
Result so far: 82.0
If we subtract 1702 from 2229, we get 527.
Fetch the next digit (0) from the dividend, attach it to 527 and continue: 5270 / 851

Going ahead to step 6:
If we divide 5270 by 851, we get 6 and a remainder of 164.
Use 6 as the next digit of our solution. 
Result so far: 826.0
If we subtract 5106 from 5270, we get 164.
Fetch the next digit (1) from the dividend, attach it to 164 and continue: 1641 / 851

Going ahead to step 7:
If we divide 1641 by 851, we get 1 and a remainder of 790.
Use 1 as the next digit of our solution. 
Result so far: 8261.0
If we take 851 away from 1641, we end up with 790.
Grab the next digit (8) from the dividend, add it to 790, then carry on: 7908 / 851

Going ahead to step 8:
7908 divided by 851 is 9 with a remainder of 249.
Write down 9 as next digit of the result. 
Result so far: 82619.0
Deduct 7659 from 7908 and we're left with 249.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2490, and continue the process.

Advancing to step 9:
851 goes into 2490 2 times with a remainder of 788.
Put 2 as the next digit of the answer. 
Result so far: 82619.2
Subtracting 1702 from 2490 leaves us with 788.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7880, and continue the process.

Moving on to step 10:
If we divide 7880 by 851, we get 9 and a remainder of 221.
The next digit of our result is 9. 
Result so far: 82619.29
The remainder is 221 after subtracting 7659 from 7880.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2210, and continue the process.

Going ahead to step 11:
The number 851 fits into 2210 2 times, leaving a remainder of 508.
The number 2 becomes the next digit in our result. 
Result so far: 82619.292
Subtracting 1702 from 2210 leaves us with 508.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5080, and continue the process.

Advancing to step 12:
If we divide 5080 by 851, we get 5 and a remainder of 825.
Write down 5 as next digit of the result. 
Result so far: 82619.2925
If we subtract 4255 from 5080, we get 825.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8250, and continue the process.

Moving on to step 13:
The number 851 fits into 8250 9 times, leaving a remainder of 591.
The number 9 becomes the next digit in our result. 
Result so far: 82619.29259
The remainder is 591 after subtracting 7659 from 8250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5910, and continue the process.

Going ahead to step 14:
851 goes into 5910 6 times with a remainder of 804.
Write down 6 as next digit of the result. 
Result so far: 82619.292596
Subtracting 5106 from 5910 leaves us with 804.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8040, and continue the process.

Advancing to step 15:
8040 divided by 851 is 9 with a remainder of 381.
Record the quotient 9 as the next digit in the result. 
Result so far: 82619.2925969
The remainder is 381 after subtracting 7659 from 8040.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3810, and continue the process.

Step 16:
If we divide 3810 by 851, we get 4 and a remainder of 406.
Use 4 as the next digit of our solution. 
Result so far: 82619.29259694
Subtract 3404 from 3810 to get 406.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4060, and continue the process.

After the division, we end up with 82619.29259694 and a remainder of 4.06e-07.