We look at the division of 53070209 by 145 
We want to figure out the number of times 53070209 can be divided by 145.

Step 1:
If we divide 5 by 145, we get 0 and a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Fetch the next digit (3) from the dividend, attach it to 5 and continue: 53 / 145

Let's proceed to step 2:
145 can be fit into 53 0 times, resulting in a remainder of 53.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 53, we end up with 53.
Append the next digit (0) from the dividend to 53 and continue with: 530 / 145

Step 3:
530 divided by 145 is 3 with a remainder of 95.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
The remainder is 95 after subtracting 435 from 530.
Take the next digit (7) from the dividend and append it to 95, then repeat: 957 / 145

Let's proceed to step 4:
145 can be fit into 957 6 times, resulting in a remainder of 87.
Put 6 as the next digit of the answer. 
Result so far: 36.0
Subtract 870 from 957 to get 87.
Fetch the next digit (0) from the dividend, attach it to 87 and continue: 870 / 145

Going ahead to step 5:
If we divide 870 by 145, we get 6 and a remainder of 0.
Put 6 as the next digit of the answer. 
Result so far: 366.0
Subtracting 870 from 870 leaves us with 0.
Append the next digit (2) from the dividend to 0 and continue with: 2 / 145

On to step 6:
145 goes into 2 0 times with a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 3660.0
If we subtract 0 from 2, we get 2.
Fetch the next digit (0) from the dividend, attach it to 2 and continue: 20 / 145

Step 7:
20 divided by 145 is 0 with a remainder of 20.
The next digit of our result is 0. 
Result so far: 36600.0
Deduct 0 from 20 and we're left with 20.
Bring next digit (9) of the dividend behind the 20 and repeat the process: 209 / 145

Let's proceed to step 8:
If we divide 209 by 145, we get 1 and a remainder of 64.
Use 1 as the next digit of our solution. 
Result so far: 366001.0
If we take 145 away from 209, we end up with 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 9:
When dividing 640 by 145, we get 4 with a remainder of 60.
Record the quotient 4 as the next digit in the result. 
Result so far: 366001.4
The remainder is 60 after subtracting 580 from 640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Going ahead to step 10:
600 divided by 145 is 4 with a remainder of 20.
Use 4 as the next digit of our solution. 
Result so far: 366001.44
The remainder is 20 after subtracting 580 from 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

After the division, we end up with 366001.44 and a remainder of 0.02.