31428907 divided by 986 
The aim is to understand the frequency of 986 in 31428907.

On to step 1:
3 divided by 986 is 0 with a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Grab the next digit (1) from the dividend, add it to 3, then carry on: 31 / 986

Advancing to step 2:
When dividing 31 by 986, we get 0 with a remainder of 31.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 31 to get 31.
Take the next digit (4) from the dividend and append it to 31, then repeat: 314 / 986

Step 3:
When dividing 314 by 986, we get 0 with a remainder of 314.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 314, we get 314.
Include the next digit (2) from the dividend after 314, then repeat: 3142 / 986

On to step 4:
3142 divided by 986 is 3 with a remainder of 184.
Put 3 as the next digit of the answer. 
Result so far: 3.0
Subtract 2958 from 3142 to get 184.
Grab the next digit (8) from the dividend, add it to 184, then carry on: 1848 / 986

Advancing to step 5:
986 can be fit into 1848 1 times, resulting in a remainder of 862.
Put 1 as the next digit of the answer. 
Result so far: 31.0
Subtracting 986 from 1848 leaves us with 862.
Include the next digit (9) from the dividend after 862, then repeat: 8629 / 986

Let's proceed to step 6:
986 goes into 8629 8 times with a remainder of 741.
Record the quotient 8 as the next digit in the result. 
Result so far: 318.0
Deduct 7888 from 8629 and we're left with 741.
Take the next digit (0) from the dividend and append it to 741, then repeat: 7410 / 986

On to step 7:
If we divide 7410 by 986, we get 7 and a remainder of 508.
Use 7 as the next digit of our solution. 
Result so far: 3187.0
If we subtract 6902 from 7410, we get 508.
Append the next digit (7) from the dividend to 508 and continue with: 5087 / 986

Step 8:
When dividing 5087 by 986, we get 5 with a remainder of 157.
Write down 5 as next digit of the result. 
Result so far: 31875.0
If we take 4930 away from 5087, we end up 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.

Step 9:
986 goes into 1570 1 times with a remainder of 584.
Record the quotient 1 as the next digit in the result. 
Result so far: 31875.1
If we take 986 away from 1570, we end up with 584.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5840, and continue the process.

On to step 10:
986 can be fit into 5840 5 times, resulting in a remainder of 910.
Put 5 as the next digit of the answer. 
Result so far: 31875.15
Subtract 4930 from 5840 to get 910.
Since there are no more digits in the dividend, we add a zero to the remainder making it 9100, and continue the process.

Going ahead to step 11:
9100 divided by 986 is 9 with a remainder of 226.
Put 9 as the next digit of the answer. 
Result so far: 31875.159
Subtract 8874 from 9100 to get 226.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2260, and continue the process.

Advancing to step 12:
986 can be fit into 2260 2 times, resulting in a remainder of 288.
Write down 2 as next digit of the result. 
Result so far: 31875.1592
The remainder is 288 after subtracting 1972 from 2260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2880, and continue the process.

Advancing to step 13:
If we divide 2880 by 986, we get 2 and a remainder of 908.
Record the quotient 2 as the next digit in the result. 
Result so far: 31875.15922
Subtract 1972 from 2880 to get 908.
Since there are no more digits in the dividend, we add a zero to the remainder making it 9080, and continue the process.

After the division, we end up with 31875.15922 and a remainder of 0.000908.