70148123 ÷ 4 
Our goal is to divide 70148123 by 4.

Step 1:
4 goes into 7 1 times with a remainder of 3.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtract 4 from 7 to get 3.
Fetch the next digit (0) from the dividend, attach it to 3 and continue: 30 / 4

Step 2:
30 divided by 4 is 7 with a remainder of 2.
The number 7 becomes the next digit in our result. 
Result so far: 17.0
Subtracting 28 from 30 leaves us with 2.
Take the next digit (1) from the dividend and append it to 2, then repeat: 21 / 4

Moving on to step 3:
If we divide 21 by 4, we get 5 and a remainder of 1.
The number 5 becomes the next digit in our result. 
Result so far: 175.0
Subtract 20 from 21 to get 1.
Include the next digit (4) from the dividend after 1, then repeat: 14 / 4

Moving on to step 4:
The number 4 fits into 14 3 times, leaving a remainder of 2.
Put 3 as the next digit of the answer. 
Result so far: 1753.0
If we subtract 12 from 14, we get 2.
Append the next digit (8) from the dividend to 2 and continue with: 28 / 4

Moving on to step 5:
The number 4 fits into 28 7 times, leaving a remainder of 0.
The number 7 becomes the next digit in our result. 
Result so far: 17537.0
If we take 28 away from 28, we end up with 0.
Fetch the next digit (1) from the dividend, attach it to 0 and continue: 1 / 4

Going ahead to step 6:
When dividing 1 by 4, we get 0 with a remainder of 1.
The next digit of our result is 0. 
Result so far: 175370.0
Subtract 0 from 1 to get 1.
Take the next digit (2) from the dividend and append it to 1, then repeat: 12 / 4

Moving on to step 7:
When dividing 12 by 4, we get 3 with a remainder of 0.
Write down 3 as next digit of the result. 
Result so far: 1753703.0
Subtract 12 from 12 to get 0.
Take the next digit (3) from the dividend and append it to 0, then repeat: 3 / 4

Let's proceed to step 8:
The number 4 fits into 3 0 times, leaving a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 17537030.0
If we take 0 away from 3, 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 9:
If we divide 30 by 4, we get 7 and a remainder of 2.
Use 7 as the next digit of our solution. 
Result so far: 17537030.7
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.

On to step 10:
If we divide 20 by 4, we get 5 and a remainder of 0.
The next digit of our result is 5. 
Result so far: 17537030.75
Deduct 20 from 20 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 11:
If we divide 0 by 4, we get 0 and a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 17537030.75
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 12:
If we divide 0 by 4, we get 0 and a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 17537030.75
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final result is 17537030.75 with a remainder of 0.0.