70258040 ÷ 809 
We want to divide 70258040 by 809.

Let's proceed to step 1:
When dividing 7 by 809, we get 0 with a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Grab the next digit (0) from the dividend, add it to 7, then carry on: 70 / 809

Let's proceed to step 2:
When dividing 70 by 809, we get 0 with a remainder of 70.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 70, we get 70.
Bring next digit (2) of the dividend behind the 70 and repeat the process: 702 / 809

On to step 3:
809 can be fit into 702 0 times, resulting in a remainder of 702.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 702 to get 702.
Bring next digit (5) of the dividend behind the 702 and repeat the process: 7025 / 809

Let's proceed to step 4:
7025 divided by 809 is 8 with a remainder of 553.
The next digit of our result is 8. 
Result so far: 8.0
Subtracting 6472 from 7025 leaves us with 553.
Grab the next digit (8) from the dividend, add it to 553, then carry on: 5538 / 809

Step 5:
5538 divided by 809 is 6 with a remainder of 684.
Record the quotient 6 as the next digit in the result. 
Result so far: 86.0
Subtracting 4854 from 5538 leaves us with 684.
Grab the next digit (0) from the dividend, add it to 684, then carry on: 6840 / 809

Moving on to step 6:
809 can be fit into 6840 8 times, resulting in a remainder of 368.
Record the quotient 8 as the next digit in the result. 
Result so far: 868.0
Subtracting 6472 from 6840 leaves us with 368.
Take the next digit (4) from the dividend and append it to 368, then repeat: 3684 / 809

On to step 7:
When dividing 3684 by 809, we get 4 with a remainder of 448.
Put 4 as the next digit of the answer. 
Result so far: 8684.0
If we subtract 3236 from 3684, we get 448.
Grab the next digit (0) from the dividend, add it to 448, then carry on: 4480 / 809

Advancing to step 8:
809 goes into 4480 5 times with a remainder of 435.
Record the quotient 5 as the next digit in the result. 
Result so far: 86845.0
Subtracting 4045 from 4480 leaves us with 435.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4350, and continue the process.

Advancing to step 9:
If we divide 4350 by 809, we get 5 and a remainder of 305.
Use 5 as the next digit of our solution. 
Result so far: 86845.5
Deduct 4045 from 4350 and we're left with 305.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3050, and continue the process.

Moving on to step 10:
The number 809 fits into 3050 3 times, leaving a remainder of 623.
Record the quotient 3 as the next digit in the result. 
Result so far: 86845.53
Subtracting 2427 from 3050 leaves us with 623.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6230, and continue the process.

Going ahead to step 11:
When dividing 6230 by 809, we get 7 with a remainder of 567.
The number 7 becomes the next digit in our result. 
Result so far: 86845.537
Subtracting 5663 from 6230 leaves us with 567.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5670, and continue the process.

Step 12:
5670 divided by 809 is 7 with a remainder of 7.
Use 7 as the next digit of our solution. 
Result so far: 86845.5377
Subtracting 5663 from 5670 leaves us with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

The final result is 86845.5377 with a remainder of 7e-05.