285970 ÷ 78 
We're looking to find how many times 78 goes into 285970.

Step 1:
2 divided by 78 is 0 with a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Take the next digit (8) from the dividend and append it to 2, then repeat: 28 / 78

Let's proceed to step 2:
78 goes into 28 0 times with a remainder of 28.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 28 after subtracting 0 from 28.
Grab the next digit (5) from the dividend, add it to 28, then carry on: 285 / 78

Advancing to step 3:
78 can be fit into 285 3 times, resulting in a remainder of 51.
Use 3 as the next digit of our solution. 
Result so far: 3.0
Deduct 234 from 285 and we're left with 51.
Include the next digit (9) from the dividend after 51, then repeat: 519 / 78

Let's proceed to step 4:
78 can be fit into 519 6 times, resulting in a remainder of 51.
Use 6 as the next digit of our solution. 
Result so far: 36.0
Subtracting 468 from 519 leaves us with 51.
Bring next digit (7) of the dividend behind the 51 and repeat the process: 517 / 78

Let's proceed to step 5:
If we divide 517 by 78, we get 6 and a remainder of 49.
The next digit of our result is 6. 
Result so far: 366.0
Deduct 468 from 517 and we're left with 49.
Append the next digit (0) from the dividend to 49 and continue with: 490 / 78

Let's proceed to step 6:
If we divide 490 by 78, we get 6 and a remainder of 22.
The number 6 becomes the next digit in our result. 
Result so far: 3666.0
Deduct 468 from 490 and we're left with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Let's proceed to step 7:
78 goes into 220 2 times with a remainder of 64.
The number 2 becomes the next digit in our result. 
Result so far: 3666.2
If we subtract 156 from 220, we get 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Advancing to step 8:
If we divide 640 by 78, we get 8 and a remainder of 16.
The next digit of our result is 8. 
Result so far: 3666.28
If we take 624 away from 640, we end up with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Advancing to step 9:
The number 78 fits into 160 2 times, leaving a remainder of 4.
Write down 2 as next digit of the result. 
Result so far: 3666.282
Deduct 156 from 160 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

On to step 10:
If we divide 40 by 78, we get 0 and a remainder of 40.
Use 0 as the next digit of our solution. 
Result so far: 3666.282
If we subtract 0 from 40, we get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Advancing to step 11:
400 divided by 78 is 5 with a remainder of 10.
Use 5 as the next digit of our solution. 
Result so far: 3666.28205
Deduct 390 from 400 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Moving on to step 12:
78 can be fit into 100 1 times, resulting in a remainder of 22.
Put 1 as the next digit of the answer. 
Result so far: 3666.282051
Subtracting 78 from 100 leaves us with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Moving on to step 13:
220 divided by 78 is 2 with a remainder of 64.
Use 2 as the next digit of our solution. 
Result so far: 3666.2820512
If we subtract 156 from 220, we get 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

On to step 14:
The number 78 fits into 640 8 times, leaving a remainder of 16.
The number 8 becomes the next digit in our result. 
Result so far: 3666.28205128
If we subtract 624 from 640, we get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

The quotient of the division is 3666.28205128, and the remainder is 1.6e-08.