70388393 ÷ 902 
Our goal is to divide 70388393 by 902.

Advancing to step 1:
The number 902 fits into 7 0 times, leaving a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Grab the next digit (0) from the dividend, add it to 7, then carry on: 70 / 902

Going ahead to step 2:
When dividing 70 by 902, we get 0 with a remainder of 70.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 70 to get 70.
Take the next digit (3) from the dividend and append it to 70, then repeat: 703 / 902

Step 3:
902 goes into 703 0 times with a remainder of 703.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 703, we end up with 703.
Fetch the next digit (8) from the dividend, attach it to 703 and continue: 7038 / 902

Moving on to step 4:
If we divide 7038 by 902, we get 7 and a remainder of 724.
The next digit of our result is 7. 
Result so far: 7.0
The remainder is 724 after subtracting 6314 from 7038.
Append the next digit (8) from the dividend to 724 and continue with: 7248 / 902

On to step 5:
902 goes into 7248 8 times with a remainder of 32.
Write down 8 as next digit of the result. 
Result so far: 78.0
Subtracting 7216 from 7248 leaves us with 32.
Append the next digit (3) from the dividend to 32 and continue with: 323 / 902

On to step 6:
323 divided by 902 is 0 with a remainder of 323.
Write down 0 as next digit of the result. 
Result so far: 780.0
Subtract 0 from 323 to get 323.
Fetch the next digit (9) from the dividend, attach it to 323 and continue: 3239 / 902

On to step 7:
The number 902 fits into 3239 3 times, leaving a remainder of 533.
The next digit of our result is 3. 
Result so far: 7803.0
If we subtract 2706 from 3239, we get 533.
Take the next digit (3) from the dividend and append it to 533, then repeat: 5333 / 902

Moving on to step 8:
If we divide 5333 by 902, we get 5 and a remainder of 823.
Put 5 as the next digit of the answer. 
Result so far: 78035.0
The remainder is 823 after subtracting 4510 from 5333.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8230, and continue the process.

Step 9:
If we divide 8230 by 902, we get 9 and a remainder of 112.
The next digit of our result is 9. 
Result so far: 78035.9
If we subtract 8118 from 8230, we get 112.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1120, and continue the process.

Advancing to step 10:
When dividing 1120 by 902, we get 1 with a remainder of 218.
Put 1 as the next digit of the answer. 
Result so far: 78035.91
The remainder is 218 after subtracting 902 from 1120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2180, and continue the process.

Moving on to step 11:
When dividing 2180 by 902, we get 2 with a remainder of 376.
Put 2 as the next digit of the answer. 
Result so far: 78035.912
Deduct 1804 from 2180 and we're left with 376.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3760, and continue the process.

Advancing to step 12:
3760 divided by 902 is 4 with a remainder of 152.
The next digit of our result is 4. 
Result so far: 78035.9124
Subtract 3608 from 3760 to get 152.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1520, and continue the process.

Advancing to step 13:
1520 divided by 902 is 1 with a remainder of 618.
Put 1 as the next digit of the answer. 
Result so far: 78035.91241
If we take 902 away from 1520, we end up with 618.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6180, and continue the process.

Going ahead to step 14:
902 can be fit into 6180 6 times, resulting in a remainder of 768.
The next digit of our result is 6. 
Result so far: 78035.912416
If we take 5412 away from 6180, we end up with 768.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7680, and continue the process.

Let's proceed to step 15:
902 goes into 7680 8 times with a remainder of 464.
Put 8 as the next digit of the answer. 
Result so far: 78035.9124168
The remainder is 464 after subtracting 7216 from 7680.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4640, and continue the process.

Advancing to step 16:
902 can be fit into 4640 5 times, resulting in a remainder of 130.
Use 5 as the next digit of our solution. 
Result so far: 78035.91241685
Subtract 4510 from 4640 to get 130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1300, and continue the process.

After the division, we end up with 78035.91241685 and a remainder of 1.3e-07.