We divide 76289877 by 858
We want to figure out the number of times 76289877 can be divided by 858.

Step 1:
When dividing 7 by 858, we get 0 with a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Take the next digit (6) from the dividend and append it to 7, then repeat: 76 / 858

Advancing to step 2:
858 goes into 76 0 times with a remainder of 76.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 76 to get 76.
Fetch the next digit (2) from the dividend, attach it to 76 and continue: 762 / 858

Moving on to step 3:
If we divide 762 by 858, we get 0 and a remainder of 762.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 762 and we're left with 762.
Include the next digit (8) from the dividend after 762, then repeat: 7628 / 858

Moving on to step 4:
The number 858 fits into 7628 8 times, leaving a remainder of 764.
Record the quotient 8 as the next digit in the result. 
Result so far: 8.0
Deduct 6864 from 7628 and we're left with 764.
Fetch the next digit (9) from the dividend, attach it to 764 and continue: 7649 / 858

Advancing to step 5:
858 goes into 7649 8 times with a remainder of 785.
Write down 8 as next digit of the result. 
Result so far: 88.0
Deduct 6864 from 7649 and we're left with 785.
Include the next digit (8) from the dividend after 785, then repeat: 7858 / 858

Advancing to step 6:
The number 858 fits into 7858 9 times, leaving a remainder of 136.
Write down 9 as next digit of the result. 
Result so far: 889.0
Subtract 7722 from 7858 to get 136.
Append the next digit (7) from the dividend to 136 and continue with: 1367 / 858

On to step 7:
858 goes into 1367 1 times with a remainder of 509.
The number 1 becomes the next digit in our result. 
Result so far: 8891.0
If we subtract 858 from 1367, we get 509.
Include the next digit (7) from the dividend after 509, then repeat: 5097 / 858

On to step 8:
If we divide 5097 by 858, we get 5 and a remainder of 807.
The number 5 becomes the next digit in our result. 
Result so far: 88915.0
Subtract 4290 from 5097 to get 807.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8070, and continue the process.

Moving on to step 9:
858 can be fit into 8070 9 times, resulting in a remainder of 348.
The number 9 becomes the next digit in our result. 
Result so far: 88915.9
The remainder is 348 after subtracting 7722 from 8070.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3480, and continue the process.

Step 10:
3480 divided by 858 is 4 with a remainder of 48.
Put 4 as the next digit of the answer. 
Result so far: 88915.94
Subtracting 3432 from 3480 leaves us with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Going ahead to step 11:
858 goes into 480 0 times with a remainder of 480.
The next digit of our result is 0. 
Result so far: 88915.94
Deduct 0 from 480 and we're left with 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4800, and continue the process.

Let's proceed to step 12:
The number 858 fits into 4800 5 times, leaving a remainder of 510.
The number 5 becomes the next digit in our result. 
Result so far: 88915.9405
Subtract 4290 from 4800 to get 510.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5100, and continue the process.

Advancing to step 13:
The number 858 fits into 5100 5 times, leaving a remainder of 810.
Put 5 as the next digit of the answer. 
Result so far: 88915.94055
Subtract 4290 from 5100 to get 810.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8100, and continue the process.

The final outcome is 88915.94055, with a leftover of 0.00081.