76400991 ÷ 214 
We want to divide 76400991 by 214.

On to step 1:
When dividing 7 by 214, we get 0 with a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Include the next digit (6) from the dividend after 7, then repeat: 76 / 214

Let's proceed to step 2:
The number 214 fits into 76 0 times, leaving a remainder of 76.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 76 and we're left with 76.
Include the next digit (4) from the dividend after 76, then repeat: 764 / 214

Moving on to step 3:
When dividing 764 by 214, we get 3 with a remainder of 122.
Use 3 as the next digit of our solution. 
Result so far: 3.0
Subtracting 642 from 764 leaves us with 122.
Grab the next digit (0) from the dividend, add it to 122, then carry on: 1220 / 214

On to step 4:
If we divide 1220 by 214, we get 5 and a remainder of 150.
Use 5 as the next digit of our solution. 
Result so far: 35.0
If we subtract 1070 from 1220, we get 150.
Take the next digit (0) from the dividend and append it to 150, then repeat: 1500 / 214

Step 5:
214 can be fit into 1500 7 times, resulting in a remainder of 2.
Use 7 as the next digit of our solution. 
Result so far: 357.0
The remainder is 2 after subtracting 1498 from 1500.
Append the next digit (9) from the dividend to 2 and continue with: 29 / 214

Advancing to step 6:
29 divided by 214 is 0 with a remainder of 29.
The next digit of our result is 0. 
Result so far: 3570.0
Subtract 0 from 29 to get 29.
Grab the next digit (9) from the dividend, add it to 29, then carry on: 299 / 214

Step 7:
214 can be fit into 299 1 times, resulting in a remainder of 85.
Write down 1 as next digit of the result. 
Result so far: 35701.0
Deduct 214 from 299 and we're left with 85.
Append the next digit (1) from the dividend to 85 and continue with: 851 / 214

Moving on to step 8:
If we divide 851 by 214, we get 3 and a remainder of 209.
The next digit of our result is 3. 
Result so far: 357013.0
The remainder is 209 after subtracting 642 from 851.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2090, and continue the process.

Advancing to step 9:
2090 divided by 214 is 9 with a remainder of 164.
Record the quotient 9 as the next digit in the result. 
Result so far: 357013.9
Subtract 1926 from 2090 to get 164.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1640, and continue the process.

Moving on to step 10:
When dividing 1640 by 214, we get 7 with a remainder of 142.
Put 7 as the next digit of the answer. 
Result so far: 357013.97
Subtracting 1498 from 1640 leaves us 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.

Moving on to step 11:
If we divide 1420 by 214, we get 6 and a remainder of 136.
The next digit of our result is 6. 
Result so far: 357013.976
Subtracting 1284 from 1420 leaves us with 136.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1360, and continue the process.

Advancing to step 12:
The number 214 fits into 1360 6 times, leaving a remainder of 76.
Record the quotient 6 as the next digit in the result. 
Result so far: 357013.9766
The remainder is 76 after subtracting 1284 from 1360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

The final outcome is 357013.9766, with a leftover of 0.00076.