70730378 ÷ 91 
Our goal is to divide 70730378 by 91.

Step 1:
The number 91 fits into 7 0 times, leaving a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Append the next digit (0) from the dividend to 7 and continue with: 70 / 91

Advancing to step 2:
If we divide 70 by 91, we get 0 and a remainder of 70.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 70 and we're left with 70.
Grab the next digit (7) from the dividend, add it to 70, then carry on: 707 / 91

Step 3:
When dividing 707 by 91, we get 7 with a remainder of 70.
Use 7 as the next digit of our solution. 
Result so far: 7.0
Subtract 637 from 707 to get 70.
Bring next digit (3) of the dividend behind the 70 and repeat the process: 703 / 91

Moving on to step 4:
91 can be fit into 703 7 times, resulting in a remainder of 66.
The number 7 becomes the next digit in our result. 
Result so far: 77.0
The remainder is 66 after subtracting 637 from 703.
Grab the next digit (0) from the dividend, add it to 66, then carry on: 660 / 91

Going ahead to step 5:
When dividing 660 by 91, we get 7 with a remainder of 23.
The next digit of our result is 7. 
Result so far: 777.0
Subtracting 637 from 660 leaves us with 23.
Grab the next digit (3) from the dividend, add it to 23, then carry on: 233 / 91

Going ahead to step 6:
91 can be fit into 233 2 times, resulting in a remainder of 51.
Use 2 as the next digit of our solution. 
Result so far: 7772.0
Subtracting 182 from 233 leaves us with 51.
Grab the next digit (7) from the dividend, add it to 51, then carry on: 517 / 91

Moving on to step 7:
91 goes into 517 5 times with a remainder of 62.
The next digit of our result is 5. 
Result so far: 77725.0
The remainder is 62 after subtracting 455 from 517.
Append the next digit (8) from the dividend to 62 and continue with: 628 / 91

Let's proceed to step 8:
When dividing 628 by 91, we get 6 with a remainder of 82.
Put 6 as the next digit of the answer. 
Result so far: 777256.0
Subtract 546 from 628 to get 82.
Since there are no more digits in the dividend, we add a zero to the remainder making it 820, and continue the process.

Going ahead to step 9:
When dividing 820 by 91, we get 9 with a remainder of 1.
The number 9 becomes the next digit in our result. 
Result so far: 777256.9
If we subtract 819 from 820, we get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Going ahead to step 10:
91 can be fit into 10 0 times, resulting in a remainder of 10.
Write down 0 as next digit of the result. 
Result so far: 777256.9
Deduct 0 from 10 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.

Advancing to step 11:
When dividing 100 by 91, we get 1 with a remainder of 9.
Put 1 as the next digit of the answer. 
Result so far: 777256.901
Subtract 91 from 100 to get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Moving on to step 12:
When dividing 90 by 91, we get 0 with a remainder of 90.
The next digit of our result is 0. 
Result so far: 777256.901
The remainder is 90 after subtracting 0 from 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 900, and continue the process.

Step 13:
The number 91 fits into 900 9 times, leaving a remainder of 81.
Write down 9 as next digit of the result. 
Result so far: 777256.90109
Deduct 819 from 900 and we're left with 81.
Since there are no more digits in the dividend, we add a zero to the remainder making it 810, and continue the process.

Moving on to step 14:
When dividing 810 by 91, we get 8 with a remainder of 82.
Record the quotient 8 as the next digit in the result. 
Result so far: 777256.901098
Subtracting 728 from 810 leaves us with 82.
Since there are no more digits in the dividend, we add a zero to the remainder making it 820, and continue the process.

Going ahead to step 15:
91 can be fit into 820 9 times, resulting in a remainder of 1.
Record the quotient 9 as the next digit in the result. 
Result so far: 777256.9010989
Subtracting 819 from 820 leaves us with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Let's proceed to step 16:
The number 91 fits into 10 0 times, leaving a remainder of 10.
The next digit of our result is 0. 
Result so far: 777256.9010989
Subtract 0 from 10 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

The final outcome is 777256.9010989, with a leftover of 1e-08.