8612378 divided by 290 
We want to figure out the number of times 8612378 can be divided by 290.

Moving on to step 1:
The number 290 fits into 8 0 times, leaving a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Include the next digit (6) from the dividend after 8, then repeat: 86 / 290

On to step 2:
290 goes into 86 0 times with a remainder of 86.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 86 and we're left with 86.
Include the next digit (1) from the dividend after 86, then repeat: 861 / 290

Moving on to step 3:
When dividing 861 by 290, we get 2 with a remainder of 281.
Write down 2 as next digit of the result. 
Result so far: 2.0
Deduct 580 from 861 and we're left with 281.
Include the next digit (2) from the dividend after 281, then repeat: 2812 / 290

Advancing to step 4:
The number 290 fits into 2812 9 times, leaving a remainder of 202.
Put 9 as the next digit of the answer. 
Result so far: 29.0
If we subtract 2610 from 2812, we get 202.
Bring next digit (3) of the dividend behind the 202 and repeat the process: 2023 / 290

On to step 5:
290 goes into 2023 6 times with a remainder of 283.
Write down 6 as next digit of the result. 
Result so far: 296.0
If we take 1740 away from 2023, we end up with 283.
Include the next digit (7) from the dividend after 283, then repeat: 2837 / 290

On to step 6:
290 can be fit into 2837 9 times, resulting in a remainder of 227.
Record the quotient 9 as the next digit in the result. 
Result so far: 2969.0
Deduct 2610 from 2837 and we're left with 227.
Grab the next digit (8) from the dividend, add it to 227, then carry on: 2278 / 290

Let's proceed to step 7:
290 goes into 2278 7 times with a remainder of 248.
Put 7 as the next digit of the answer. 
Result so far: 29697.0
The remainder is 248 after subtracting 2030 from 2278.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2480, and continue the process.

Going ahead to step 8:
2480 divided by 290 is 8 with a remainder of 160.
The next digit of our result is 8. 
Result so far: 29697.8
If we take 2320 away from 2480, we end up with 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

Step 9:
If we divide 1600 by 290, we get 5 and a remainder of 150.
Put 5 as the next digit of the answer. 
Result so far: 29697.85
Deduct 1450 from 1600 and we're left with 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1500, and continue the process.

Let's proceed to step 10:
290 goes into 1500 5 times with a remainder of 50.
Write down 5 as next digit of the result. 
Result so far: 29697.855
If we take 1450 away from 1500, we end up with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

The final outcome is 29697.855, with a leftover of 0.005.