25780998 ÷ 861 
Let's see how many times 861 fits into 25780998.

Let's proceed to step 1:
2 divided by 861 is 0 with a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Append the next digit (5) from the dividend to 2 and continue with: 25 / 861

On to step 2:
If we divide 25 by 861, we get 0 and a remainder of 25.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 25 after subtracting 0 from 25.
Include the next digit (7) from the dividend after 25, then repeat: 257 / 861

Let's proceed to step 3:
257 divided by 861 is 0 with a remainder of 257.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 257, we end up with 257.
Take the next digit (8) from the dividend and append it to 257, then repeat: 2578 / 861

Advancing to step 4:
When dividing 2578 by 861, we get 2 with a remainder of 856.
The next digit of our result is 2. 
Result so far: 2.0
Subtract 1722 from 2578 to get 856.
Take the next digit (0) from the dividend and append it to 856, then repeat: 8560 / 861

On to step 5:
861 goes into 8560 9 times with a remainder of 811.
Use 9 as the next digit of our solution. 
Result so far: 29.0
Subtract 7749 from 8560 to get 811.
Append the next digit (9) from the dividend to 811 and continue with: 8119 / 861

Going ahead to step 6:
The number 861 fits into 8119 9 times, leaving a remainder of 370.
Use 9 as the next digit of our solution. 
Result so far: 299.0
Subtracting 7749 from 8119 leaves us with 370.
Grab the next digit (9) from the dividend, add it to 370, then carry on: 3709 / 861

Moving on to step 7:
When dividing 3709 by 861, we get 4 with a remainder of 265.
The number 4 becomes the next digit in our result. 
Result so far: 2994.0
Subtract 3444 from 3709 to get 265.
Include the next digit (8) from the dividend after 265, then repeat: 2658 / 861

Let's proceed to step 8:
When dividing 2658 by 861, we get 3 with a remainder of 75.
Put 3 as the next digit of the answer. 
Result so far: 29943.0
The remainder is 75 after subtracting 2583 from 2658.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Advancing to step 9:
861 can be fit into 750 0 times, resulting in a remainder of 750.
Put 0 as the next digit of the answer. 
Result so far: 29943.0
Subtracting 0 from 750 leaves us with 750.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7500, and continue the process.

On to step 10:
861 can be fit into 7500 8 times, resulting in a remainder of 612.
Write down 8 as next digit of the result. 
Result so far: 29943.08
Subtracting 6888 from 7500 leaves us with 612.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6120, and continue the process.

On to step 11:
861 goes into 6120 7 times with a remainder of 93.
The number 7 becomes the next digit in our result. 
Result so far: 29943.087
Subtract 6027 from 6120 to get 93.
Since there are no more digits in the dividend, we add a zero to the remainder making it 930, and continue the process.

Let's proceed to step 12:
When dividing 930 by 861, we get 1 with a remainder of 69.
Use 1 as the next digit of our solution. 
Result so far: 29943.0871
Subtract 861 from 930 to get 69.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

Advancing to step 13:
861 can be fit into 690 0 times, resulting in a remainder of 690.
Use 0 as the next digit of our solution. 
Result so far: 29943.0871
If we subtract 0 from 690, we get 690.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6900, and continue the process.

Moving on to step 14:
861 can be fit into 6900 8 times, resulting in a remainder of 12.
Write down 8 as next digit of the result. 
Result so far: 29943.087108
The remainder is 12 after subtracting 6888 from 6900.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Going ahead to step 15:
861 can be fit into 120 0 times, resulting in a remainder of 120.
Record the quotient 0 as the next digit in the result. 
Result so far: 29943.087108
If we take 0 away from 120, we end up with 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

Step 16:
861 can be fit into 1200 1 times, resulting in a remainder of 339.
Write down 1 as next digit of the result. 
Result so far: 29943.08710801
Subtracting 861 from 1200 leaves us with 339.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3390, and continue the process.

The final result is 29943.08710801 with a remainder of 3.39e-07.