We're dividing 375619 by 90 
We want to figure out the number of times 375619 can be divided by 90.

Let's proceed to step 1:
90 can be fit into 3 0 times, resulting in a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Take the next digit (7) from the dividend and append it to 3, then repeat: 37 / 90

Advancing to step 2:
When dividing 37 by 90, we get 0 with a remainder of 37.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 37 to get 37.
Fetch the next digit (5) from the dividend, attach it to 37 and continue: 375 / 90

Let's proceed to step 3:
90 goes into 375 4 times with a remainder of 15.
Put 4 as the next digit of the answer. 
Result so far: 4.0
The remainder is 15 after subtracting 360 from 375.
Take the next digit (6) from the dividend and append it to 15, then repeat: 156 / 90

Let's proceed to step 4:
90 goes into 156 1 times with a remainder of 66.
Put 1 as the next digit of the answer. 
Result so far: 41.0
The remainder is 66 after subtracting 90 from 156.
Fetch the next digit (1) from the dividend, attach it to 66 and continue: 661 / 90

On to step 5:
90 goes into 661 7 times with a remainder of 31.
Write down 7 as next digit of the result. 
Result so far: 417.0
Subtract 630 from 661 to get 31.
Include the next digit (9) from the dividend after 31, then repeat: 319 / 90

Going ahead to step 6:
319 divided by 90 is 3 with a remainder of 49.
Put 3 as the next digit of the answer. 
Result so far: 4173.0
Subtracting 270 from 319 leaves us with 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

Going ahead to step 7:
90 can be fit into 490 5 times, resulting in a remainder of 40.
The number 5 becomes the next digit in our result. 
Result so far: 4173.5
The remainder is 40 after subtracting 450 from 490.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

On to step 8:
400 divided by 90 is 4 with a remainder of 40.
Use 4 as the next digit of our solution. 
Result so far: 4173.54
The remainder is 40 after subtracting 360 from 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Step 9:
If we divide 400 by 90, we get 4 and a remainder of 40.
Record the quotient 4 as the next digit in the result. 
Result so far: 4173.544
Subtracting 360 from 400 leaves us with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

The final outcome is 4173.544, with a leftover of 0.004.