90612380 ÷ 7 
We want to figure out the number of times 90612380 can be divided by 7.

Step 1:
7 goes into 9 1 times with a remainder of 2.
The next digit of our result is 1. 
Result so far: 1.0
Subtract 7 from 9 to get 2.
Include the next digit (0) from the dividend after 2, then repeat: 20 / 7

Let's proceed to step 2:
The number 7 fits into 20 2 times, leaving a remainder of 6.
Write down 2 as next digit of the result. 
Result so far: 12.0
Subtracting 14 from 20 leaves us with 6.
Fetch the next digit (6) from the dividend, attach it to 6 and continue: 66 / 7

On to step 3:
66 divided by 7 is 9 with a remainder of 3.
The next digit of our result is 9. 
Result so far: 129.0
If we take 63 away from 66, we end up with 3.
Take the next digit (1) from the dividend and append it to 3, then repeat: 31 / 7

Going ahead to step 4:
When dividing 31 by 7, we get 4 with a remainder of 3.
Use 4 as the next digit of our solution. 
Result so far: 1294.0
If we take 28 away from 31, we end up with 3.
Grab the next digit (2) from the dividend, add it to 3, then carry on: 32 / 7

Let's proceed to step 5:
If we divide 32 by 7, we get 4 and a remainder of 4.
The next digit of our result is 4. 
Result so far: 12944.0
If we subtract 28 from 32, we get 4.
Take the next digit (3) from the dividend and append it to 4, then repeat: 43 / 7

Let's proceed to step 6:
43 divided by 7 is 6 with a remainder of 1.
Use 6 as the next digit of our solution. 
Result so far: 129446.0
If we take 42 away from 43, we end up with 1.
Fetch the next digit (8) from the dividend, attach it to 1 and continue: 18 / 7

Moving on to step 7:
The number 7 fits into 18 2 times, leaving a remainder of 4.
Record the quotient 2 as the next digit in the result. 
Result so far: 1294462.0
If we take 14 away from 18, we end up with 4.
Append the next digit (0) from the dividend to 4 and continue with: 40 / 7

Let's proceed to step 8:
If we divide 40 by 7, we get 5 and a remainder of 5.
The next digit of our result is 5. 
Result so far: 12944625.0
If we take 35 away from 40, we end up with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

On to step 9:
7 goes into 50 7 times with a remainder of 1.
Use 7 as the next digit of our solution. 
Result so far: 12944625.7
The remainder is 1 after subtracting 49 from 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Advancing to step 10:
7 can be fit into 10 1 times, resulting in a remainder of 3.
Record the quotient 1 as the next digit in the result. 
Result so far: 12944625.71
If we take 7 away from 10, we end up with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Step 11:
The number 7 fits into 30 4 times, leaving a remainder of 2.
Use 4 as the next digit of our solution. 
Result so far: 12944625.714
Deduct 28 from 30 and we're left with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Moving on to step 12:
If we divide 20 by 7, we get 2 and a remainder of 6.
The next digit of our result is 2. 
Result so far: 12944625.7142
If we take 14 away from 20, we end up with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Moving on to step 13:
The number 7 fits into 60 8 times, leaving a remainder of 4.
Put 8 as the next digit of the answer. 
Result so far: 12944625.71428
Deduct 56 from 60 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.

Advancing to step 14:
7 goes into 40 5 times with a remainder of 5.
Write down 5 as next digit of the result. 
Result so far: 12944625.714285
The remainder is 5 after subtracting 35 from 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Going ahead to step 15:
If we divide 50 by 7, we get 7 and a remainder of 1.
Record the quotient 7 as the next digit in the result. 
Result so far: 12944625.7142857
Subtracting 49 from 50 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:
If we divide 10 by 7, we get 1 and a remainder of 3.
Record the quotient 1 as the next digit in the result. 
Result so far: 12944625.71428571
Deduct 7 from 10 and we're left with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

The final result is 12944625.71428571 with a remainder of 3e-09.