42089374 ÷ 902 
We want to figure out the number of times 42089374 can be divided by 902.

Step 1:
902 can be fit into 4 0 times, resulting in a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 4, we end up with 4.
Bring next digit (2) of the dividend behind the 4 and repeat the process: 42 / 902

Step 2:
902 can be fit into 42 0 times, resulting in a remainder of 42.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 42 leaves us with 42.
Append the next digit (0) from the dividend to 42 and continue with: 420 / 902

Going ahead to step 3:
If we divide 420 by 902, we get 0 and a remainder of 420.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 420 and we're left with 420.
Bring next digit (8) of the dividend behind the 420 and repeat the process: 4208 / 902

Step 4:
4208 divided by 902 is 4 with a remainder of 600.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
If we subtract 3608 from 4208, we get 600.
Grab the next digit (9) from the dividend, add it to 600, then carry on: 6009 / 902

On to step 5:
902 can be fit into 6009 6 times, resulting in a remainder of 597.
Put 6 as the next digit of the answer. 
Result so far: 46.0
Deduct 5412 from 6009 and we're left with 597.
Append the next digit (3) from the dividend to 597 and continue with: 5973 / 902

On to step 6:
When dividing 5973 by 902, we get 6 with a remainder of 561.
The next digit of our result is 6. 
Result so far: 466.0
Subtracting 5412 from 5973 leaves us with 561.
Append the next digit (7) from the dividend to 561 and continue with: 5617 / 902

On to step 7:
902 goes into 5617 6 times with a remainder of 205.
Record the quotient 6 as the next digit in the result. 
Result so far: 4666.0
Subtract 5412 from 5617 to get 205.
Take the next digit (4) from the dividend and append it to 205, then repeat: 2054 / 902

On to step 8:
The number 902 fits into 2054 2 times, leaving a remainder of 250.
The next digit of our result is 2. 
Result so far: 46662.0
If we subtract 1804 from 2054, we get 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2500, and continue the process.

Moving on to step 9:
902 can be fit into 2500 2 times, resulting in a remainder of 696.
Use 2 as the next digit of our solution. 
Result so far: 46662.2
Deduct 1804 from 2500 and we're left with 696.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6960, and continue the process.

On to step 10:
902 goes into 6960 7 times with a remainder of 646.
The number 7 becomes the next digit in our result. 
Result so far: 46662.27
If we subtract 6314 from 6960, we get 646.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6460, and continue the process.

Moving on to step 11:
902 goes into 6460 7 times with a remainder of 146.
Use 7 as the next digit of our solution. 
Result so far: 46662.277
If we subtract 6314 from 6460, we get 146.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1460, and continue the process.

The final outcome is 46662.277, with a leftover of 0.0146.