Let's divide 66381401 by 770
The aim is to understand the frequency of 770 in 66381401.

Advancing to step 1:
770 goes into 6 0 times with a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Include the next digit (6) from the dividend after 6, then repeat: 66 / 770

Advancing to step 2:
When dividing 66 by 770, we get 0 with a remainder of 66.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 66 to get 66.
Fetch the next digit (3) from the dividend, attach it to 66 and continue: 663 / 770

Let's proceed to step 3:
770 can be fit into 663 0 times, resulting in a remainder of 663.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 663 leaves us with 663.
Append the next digit (8) from the dividend to 663 and continue with: 6638 / 770

Going ahead to step 4:
6638 divided by 770 is 8 with a remainder of 478.
Use 8 as the next digit of our solution. 
Result so far: 8.0
If we take 6160 away from 6638, we end up with 478.
Fetch the next digit (1) from the dividend, attach it to 478 and continue: 4781 / 770

Moving on to step 5:
770 goes into 4781 6 times with a remainder of 161.
Write down 6 as next digit of the result. 
Result so far: 86.0
Subtract 4620 from 4781 to get 161.
Grab the next digit (4) from the dividend, add it to 161, then carry on: 1614 / 770

Going ahead to step 6:
The number 770 fits into 1614 2 times, leaving a remainder of 74.
Put 2 as the next digit of the answer. 
Result so far: 862.0
Deduct 1540 from 1614 and we're left with 74.
Bring next digit (0) of the dividend behind the 74 and repeat the process: 740 / 770

On to step 7:
770 goes into 740 0 times with a remainder of 740.
Put 0 as the next digit of the answer. 
Result so far: 8620.0
Subtract 0 from 740 to get 740.
Bring next digit (1) of the dividend behind the 740 and repeat the process: 7401 / 770

Let's proceed to step 8:
770 can be fit into 7401 9 times, resulting in a remainder of 471.
Record the quotient 9 as the next digit in the result. 
Result so far: 86209.0
If we subtract 6930 from 7401, we get 471.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4710, and continue the process.

Let's proceed to step 9:
If we divide 4710 by 770, we get 6 and a remainder of 90.
Write down 6 as next digit of the result. 
Result so far: 86209.6
Deduct 4620 from 4710 and we're left with 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 900, and continue the process.

Let's proceed to step 10:
When dividing 900 by 770, we get 1 with a remainder of 130.
Use 1 as the next digit of our solution. 
Result so far: 86209.61
Deduct 770 from 900 and we're left with 130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1300, and continue the process.

Let's proceed to step 11:
When dividing 1300 by 770, we get 1 with a remainder of 530.
Use 1 as the next digit of our solution. 
Result so far: 86209.611
Deduct 770 from 1300 and we're left with 530.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5300, and continue the process.

Our division results in 86209.611 with a remaining 0.053.