68156398 ÷ 451 
Let's see how many times 451 fits into 68156398.

On to step 1:
6 divided by 451 is 0 with a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Append the next digit (8) from the dividend to 6 and continue with: 68 / 451

Advancing to step 2:
451 can be fit into 68 0 times, resulting in a remainder of 68.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 68 to get 68.
Take the next digit (1) from the dividend and append it to 68, then repeat: 681 / 451

Moving on to step 3:
681 divided by 451 is 1 with a remainder of 230.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtracting 451 from 681 leaves us with 230.
Fetch the next digit (5) from the dividend, attach it to 230 and continue: 2305 / 451

On to step 4:
The number 451 fits into 2305 5 times, leaving a remainder of 50.
Write down 5 as next digit of the result. 
Result so far: 15.0
If we subtract 2255 from 2305, we get 50.
Take the next digit (6) from the dividend and append it to 50, then repeat: 506 / 451

Let's proceed to step 5:
451 can be fit into 506 1 times, resulting in a remainder of 55.
The next digit of our result is 1. 
Result so far: 151.0
Subtract 451 from 506 to get 55.
Grab the next digit (3) from the dividend, add it to 55, then carry on: 553 / 451

Going ahead to step 6:
When dividing 553 by 451, we get 1 with a remainder of 102.
Use 1 as the next digit of our solution. 
Result so far: 1511.0
If we take 451 away from 553, we end up with 102.
Append the next digit (9) from the dividend to 102 and continue with: 1029 / 451

Let's proceed to step 7:
1029 divided by 451 is 2 with a remainder of 127.
Record the quotient 2 as the next digit in the result. 
Result so far: 15112.0
Deduct 902 from 1029 and we're left with 127.
Fetch the next digit (8) from the dividend, attach it to 127 and continue: 1278 / 451

Let's proceed to step 8:
The number 451 fits into 1278 2 times, leaving a remainder of 376.
The next digit of our result is 2. 
Result so far: 151122.0
If we take 902 away from 1278, we end up with 376.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3760, and continue the process.

On to step 9:
451 goes into 3760 8 times with a remainder of 152.
The next digit of our result is 8. 
Result so far: 151122.8
Subtract 3608 from 3760 to get 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 10:
The number 451 fits into 1520 3 times, leaving a remainder of 167.
Record the quotient 3 as the next digit in the result. 
Result so far: 151122.83
Deduct 1353 from 1520 and we're left with 167.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1670, and continue the process.

Advancing to step 11:
1670 divided by 451 is 3 with a remainder of 317.
The number 3 becomes the next digit in our result. 
Result so far: 151122.833
If we subtract 1353 from 1670, we get 317.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3170, and continue the process.

The quotient of the division is 151122.833, and the remainder is 0.0317.