We divide 66990972 by 401
We want to figure out the number of times 66990972 can be divided by 401.

Advancing to step 1:
401 can be fit into 6 0 times, resulting in a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Bring next digit (6) of the dividend behind the 6 and repeat the process: 66 / 401

Moving on to step 2:
The number 401 fits into 66 0 times, leaving a remainder of 66.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 66 and we're left with 66.
Include the next digit (9) from the dividend after 66, then repeat: 669 / 401

On to step 3:
If we divide 669 by 401, we get 1 and a remainder of 268.
Use 1 as the next digit of our solution. 
Result so far: 1.0
The remainder is 268 after subtracting 401 from 669.
Take the next digit (9) from the dividend and append it to 268, then repeat: 2689 / 401

Going ahead to step 4:
401 goes into 2689 6 times with a remainder of 283.
Use 6 as the next digit of our solution. 
Result so far: 16.0
If we subtract 2406 from 2689, we get 283.
Include the next digit (0) from the dividend after 283, then repeat: 2830 / 401

Going ahead to step 5:
401 goes into 2830 7 times with a remainder of 23.
The number 7 becomes the next digit in our result. 
Result so far: 167.0
Subtract 2807 from 2830 to get 23.
Grab the next digit (9) from the dividend, add it to 23, then carry on: 239 / 401

Step 6:
When dividing 239 by 401, we get 0 with a remainder of 239.
Write down 0 as next digit of the result. 
Result so far: 1670.0
Deduct 0 from 239 and we're left with 239.
Include the next digit (7) from the dividend after 239, then repeat: 2397 / 401

Moving on to step 7:
2397 divided by 401 is 5 with a remainder of 392.
Write down 5 as next digit of the result. 
Result so far: 16705.0
If we subtract 2005 from 2397, we get 392.
Fetch the next digit (2) from the dividend, attach it to 392 and continue: 3922 / 401

On to step 8:
The number 401 fits into 3922 9 times, leaving a remainder of 313.
The next digit of our result is 9. 
Result so far: 167059.0
Subtracting 3609 from 3922 leaves us with 313.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3130, and continue the process.

Advancing to step 9:
The number 401 fits into 3130 7 times, leaving a remainder of 323.
Use 7 as the next digit of our solution. 
Result so far: 167059.7
If we take 2807 away from 3130, we end up with 323.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3230, and continue the process.

Step 10:
401 goes into 3230 8 times with a remainder of 22.
The number 8 becomes the next digit in our result. 
Result so far: 167059.78
Subtract 3208 from 3230 to get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Advancing to step 11:
The number 401 fits into 220 0 times, leaving a remainder of 220.
Write down 0 as next digit of the result. 
Result so far: 167059.78
The remainder is 220 after subtracting 0 from 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2200, and continue the process.

Step 12:
When dividing 2200 by 401, we get 5 with a remainder of 195.
Use 5 as the next digit of our solution. 
Result so far: 167059.7805
Deduct 2005 from 2200 and we're left with 195.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1950, and continue the process.

Step 13:
401 goes into 1950 4 times with a remainder of 346.
Record the quotient 4 as the next digit in the result. 
Result so far: 167059.78054
Deduct 1604 from 1950 and we're left with 346.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3460, and continue the process.

On to step 14:
401 can be fit into 3460 8 times, resulting in a remainder of 252.
Put 8 as the next digit of the answer. 
Result so far: 167059.780548
Subtracting 3208 from 3460 leaves us with 252.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2520, and continue the process.

Going ahead to step 15:
The number 401 fits into 2520 6 times, leaving a remainder of 114.
Write down 6 as next digit of the result. 
Result so far: 167059.7805486
If we subtract 2406 from 2520, we get 114.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1140, and continue the process.

Going ahead to step 16:
The number 401 fits into 1140 2 times, leaving a remainder of 338.
Write down 2 as next digit of the result. 
Result so far: 167059.78054862
If we subtract 802 from 1140, we get 338.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3380, and continue the process.

The final outcome is 167059.78054862, with a leftover of 3.38e-07.