86485827 ÷ 401 
The aim is to understand the frequency of 401 in 86485827.

On to step 1:
401 can be fit into 8 0 times, resulting in a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Bring next digit (6) of the dividend behind the 8 and repeat the process: 86 / 401

Let's proceed to step 2:
If we divide 86 by 401, we get 0 and a remainder of 86.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 86, we get 86.
Bring next digit (4) of the dividend behind the 86 and repeat the process: 864 / 401

Moving on to step 3:
864 divided by 401 is 2 with a remainder of 62.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
Deduct 802 from 864 and we're left with 62.
Take the next digit (8) from the dividend and append it to 62, then repeat: 628 / 401

Going ahead to step 4:
When dividing 628 by 401, we get 1 with a remainder of 227.
Put 1 as the next digit of the answer. 
Result so far: 21.0
Deduct 401 from 628 and we're left with 227.
Append the next digit (5) from the dividend to 227 and continue with: 2275 / 401

Let's proceed to step 5:
401 goes into 2275 5 times with a remainder of 270.
Use 5 as the next digit of our solution. 
Result so far: 215.0
If we subtract 2005 from 2275, we get 270.
Append the next digit (8) from the dividend to 270 and continue with: 2708 / 401

Advancing to step 6:
2708 divided by 401 is 6 with a remainder of 302.
Use 6 as the next digit of our solution. 
Result so far: 2156.0
The remainder is 302 after subtracting 2406 from 2708.
Grab the next digit (2) from the dividend, add it to 302, then carry on: 3022 / 401

Advancing to step 7:
3022 divided by 401 is 7 with a remainder of 215.
Put 7 as the next digit of the answer. 
Result so far: 21567.0
If we subtract 2807 from 3022, we get 215.
Fetch the next digit (7) from the dividend, attach it to 215 and continue: 2157 / 401

Let's proceed to step 8:
401 can be fit into 2157 5 times, resulting in a remainder of 152.
The number 5 becomes the next digit in our result. 
Result so far: 215675.0
If we take 2005 away from 2157, we end up with 152.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1520, and continue the process.

Moving on to step 9:
401 can be fit into 1520 3 times, resulting in a remainder of 317.
Put 3 as the next digit of the answer. 
Result so far: 215675.3
If we take 1203 away from 1520, we end up with 317.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3170, and continue the process.

Going ahead to step 10:
401 can be fit into 3170 7 times, resulting in a remainder of 363.
Write down 7 as next digit of the result. 
Result so far: 215675.37
Deduct 2807 from 3170 and we're left with 363.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3630, and continue the process.

Let's proceed to step 11:
If we divide 3630 by 401, we get 9 and a remainder of 21.
Put 9 as the next digit of the answer. 
Result so far: 215675.379
If we take 3609 away from 3630, we end up with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Let's proceed to step 12:
If we divide 210 by 401, we get 0 and a remainder of 210.
The number 0 becomes the next digit in our result. 
Result so far: 215675.379
The remainder is 210 after subtracting 0 from 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2100, and continue the process.

Going ahead to step 13:
The number 401 fits into 2100 5 times, leaving a remainder of 95.
Record the quotient 5 as the next digit in the result. 
Result so far: 215675.37905
Deduct 2005 from 2100 and we're left with 95.
Since there are no more digits in the dividend, we add a zero to the remainder making it 950, and continue the process.

On to step 14:
If we divide 950 by 401, we get 2 and a remainder of 148.
The next digit of our result is 2. 
Result so far: 215675.379052
If we take 802 away from 950, we end up with 148.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1480, and continue the process.

Moving on to step 15:
401 goes into 1480 3 times with a remainder of 277.
Put 3 as the next digit of the answer. 
Result so far: 215675.3790523
If we subtract 1203 from 1480, we get 277.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2770, and continue the process.

Advancing to step 16:
The number 401 fits into 2770 6 times, leaving a remainder of 364.
Put 6 as the next digit of the answer. 
Result so far: 215675.37905236
Subtract 2406 from 2770 to get 364.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3640, and continue the process.

The quotient of the division is 215675.37905236, and the remainder is 3.64e-07.