We're dividing 64487926 by 906 
The aim is to understand the frequency of 906 in 64487926.

Step 1:
If we divide 6 by 906, we get 0 and a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Bring next digit (4) of the dividend behind the 6 and repeat the process: 64 / 906

Let's proceed to step 2:
The number 906 fits into 64 0 times, leaving a remainder of 64.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 64 leaves us with 64.
Bring next digit (4) of the dividend behind the 64 and repeat the process: 644 / 906

Going ahead to step 3:
If we divide 644 by 906, we get 0 and a remainder of 644.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 644 leaves us with 644.
Bring next digit (8) of the dividend behind the 644 and repeat the process: 6448 / 906

On to step 4:
When dividing 6448 by 906, we get 7 with a remainder of 106.
Record the quotient 7 as the next digit in the result. 
Result so far: 7.0
Subtracting 6342 from 6448 leaves us with 106.
Append the next digit (7) from the dividend to 106 and continue with: 1067 / 906

Step 5:
The number 906 fits into 1067 1 times, leaving a remainder of 161.
Use 1 as the next digit of our solution. 
Result so far: 71.0
Subtract 906 from 1067 to get 161.
Include the next digit (9) from the dividend after 161, then repeat: 1619 / 906

Step 6:
If we divide 1619 by 906, we get 1 and a remainder of 713.
Put 1 as the next digit of the answer. 
Result so far: 711.0
If we subtract 906 from 1619, we get 713.
Append the next digit (2) from the dividend to 713 and continue with: 7132 / 906

On to step 7:
The number 906 fits into 7132 7 times, leaving a remainder of 790.
Put 7 as the next digit of the answer. 
Result so far: 7117.0
Deduct 6342 from 7132 and we're left with 790.
Grab the next digit (6) from the dividend, add it to 790, then carry on: 7906 / 906

On to step 8:
If we divide 7906 by 906, we get 8 and a remainder of 658.
Put 8 as the next digit of the answer. 
Result so far: 71178.0
The remainder is 658 after subtracting 7248 from 7906.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6580, and continue the process.

Advancing to step 9:
906 can be fit into 6580 7 times, resulting in a remainder of 238.
The number 7 becomes the next digit in our result. 
Result so far: 71178.7
Subtract 6342 from 6580 to get 238.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2380, and continue the process.

Step 10:
2380 divided by 906 is 2 with a remainder of 568.
Use 2 as the next digit of our solution. 
Result so far: 71178.72
If we take 1812 away from 2380, we end up with 568.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5680, and continue the process.

Step 11:
The number 906 fits into 5680 6 times, leaving a remainder of 244.
Use 6 as the next digit of our solution. 
Result so far: 71178.726
The remainder is 244 after subtracting 5436 from 5680.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2440, and continue the process.

On to step 12:
906 can be fit into 2440 2 times, resulting in a remainder of 628.
The number 2 becomes the next digit in our result. 
Result so far: 71178.7262
If we take 1812 away from 2440, we end up with 628.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6280, and continue the process.

Moving on to step 13:
If we divide 6280 by 906, we get 6 and a remainder of 844.
The number 6 becomes the next digit in our result. 
Result so far: 71178.72626
The remainder is 844 after subtracting 5436 from 6280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8440, and continue the process.

On to step 14:
906 can be fit into 8440 9 times, resulting in a remainder of 286.
Record the quotient 9 as the next digit in the result. 
Result so far: 71178.726269
If we subtract 8154 from 8440, we get 286.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2860, and continue the process.

Let's proceed to step 15:
When dividing 2860 by 906, we get 3 with a remainder of 142.
Put 3 as the next digit of the answer. 
Result so far: 71178.7262693
If we take 2718 away from 2860, we end up with 142.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1420, and continue the process.

Going ahead to step 16:
906 can be fit into 1420 1 times, resulting in a remainder of 514.
The number 1 becomes the next digit in our result. 
Result so far: 71178.72626931
If we subtract 906 from 1420, we get 514.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5140, and continue the process.

After the division, we end up with 71178.72626931 and a remainder of 5.14e-07.