We're dividing 76294310 by 645 
We want to figure out the number of times 76294310 can be divided by 645.

Step 1:
7 divided by 645 is 0 with a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Take the next digit (6) from the dividend and append it to 7, then repeat: 76 / 645

Step 2:
645 goes into 76 0 times with a remainder of 76.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 76 after subtracting 0 from 76.
Fetch the next digit (2) from the dividend, attach it to 76 and continue: 762 / 645

Step 3:
The number 645 fits into 762 1 times, leaving a remainder of 117.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtracting 645 from 762 leaves us with 117.
Append the next digit (9) from the dividend to 117 and continue with: 1179 / 645

Step 4:
645 goes into 1179 1 times with a remainder of 534.
The number 1 becomes the next digit in our result. 
Result so far: 11.0
Subtract 645 from 1179 to get 534.
Fetch the next digit (4) from the dividend, attach it to 534 and continue: 5344 / 645

Advancing to step 5:
The number 645 fits into 5344 8 times, leaving a remainder of 184.
The next digit of our result is 8. 
Result so far: 118.0
Subtracting 5160 from 5344 leaves us with 184.
Include the next digit (3) from the dividend after 184, then repeat: 1843 / 645

Going ahead to step 6:
645 goes into 1843 2 times with a remainder of 553.
The number 2 becomes the next digit in our result. 
Result so far: 1182.0
Deduct 1290 from 1843 and we're left with 553.
Grab the next digit (1) from the dividend, add it to 553, then carry on: 5531 / 645

Going ahead to step 7:
645 can be fit into 5531 8 times, resulting in a remainder of 371.
Use 8 as the next digit of our solution. 
Result so far: 11828.0
If we subtract 5160 from 5531, we get 371.
Append the next digit (0) from the dividend to 371 and continue with: 3710 / 645

Advancing to step 8:
When dividing 3710 by 645, we get 5 with a remainder of 485.
The next digit of our result is 5. 
Result so far: 118285.0
The remainder is 485 after subtracting 3225 from 3710.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4850, and continue the process.

Let's proceed to step 9:
When dividing 4850 by 645, we get 7 with a remainder of 335.
Record the quotient 7 as the next digit in the result. 
Result so far: 118285.7
The remainder is 335 after subtracting 4515 from 4850.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3350, and continue the process.

Let's proceed to step 10:
When dividing 3350 by 645, we get 5 with a remainder of 125.
Write down 5 as next digit of the result. 
Result so far: 118285.75
The remainder is 125 after subtracting 3225 from 3350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1250, and continue the process.

Moving on to step 11:
The number 645 fits into 1250 1 times, leaving a remainder of 605.
Use 1 as the next digit of our solution. 
Result so far: 118285.751
Subtract 645 from 1250 to get 605.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6050, and continue the process.

Moving on to step 12:
The number 645 fits into 6050 9 times, leaving a remainder of 245.
Put 9 as the next digit of the answer. 
Result so far: 118285.7519
Deduct 5805 from 6050 and we're left with 245.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2450, and continue the process.

Step 13:
645 goes into 2450 3 times with a remainder of 515.
The next digit of our result is 3. 
Result so far: 118285.75193
Deduct 1935 from 2450 and we're left with 515.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5150, and continue the process.

Going ahead to step 14:
The number 645 fits into 5150 7 times, leaving a remainder of 635.
Write down 7 as next digit of the result. 
Result so far: 118285.751937
If we subtract 4515 from 5150, we get 635.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6350, and continue the process.

Advancing to step 15:
If we divide 6350 by 645, we get 9 and a remainder of 545.
Record the quotient 9 as the next digit in the result. 
Result so far: 118285.7519379
If we take 5805 away from 6350, we end up with 545.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5450, and continue the process.

Advancing to step 16:
When dividing 5450 by 645, we get 8 with a remainder of 290.
The number 8 becomes the next digit in our result. 
Result so far: 118285.75193798
The remainder is 290 after subtracting 5160 from 5450.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2900, and continue the process.

The final result is 118285.75193798 with a remainder of 2.9e-07.