51945290 ÷ 373 
Let's see how many times 373 fits into 51945290.

Step 1:
The number 373 fits into 5 0 times, leaving a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Fetch the next digit (1) from the dividend, attach it to 5 and continue: 51 / 373

Going ahead to step 2:
373 goes into 51 0 times with a remainder of 51.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 51 after subtracting 0 from 51.
Grab the next digit (9) from the dividend, add it to 51, then carry on: 519 / 373

Advancing to step 3:
519 divided by 373 is 1 with a remainder of 146.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we subtract 373 from 519, we get 146.
Take the next digit (4) from the dividend and append it to 146, then repeat: 1464 / 373

Step 4:
373 can be fit into 1464 3 times, resulting in a remainder of 345.
Write down 3 as next digit of the result. 
Result so far: 13.0
Subtract 1119 from 1464 to get 345.
Fetch the next digit (5) from the dividend, attach it to 345 and continue: 3455 / 373

Let's proceed to step 5:
When dividing 3455 by 373, we get 9 with a remainder of 98.
Put 9 as the next digit of the answer. 
Result so far: 139.0
If we take 3357 away from 3455, we end up with 98.
Bring next digit (2) of the dividend behind the 98 and repeat the process: 982 / 373

On to step 6:
373 can be fit into 982 2 times, resulting in a remainder of 236.
The number 2 becomes the next digit in our result. 
Result so far: 1392.0
Subtracting 746 from 982 leaves us with 236.
Fetch the next digit (9) from the dividend, attach it to 236 and continue: 2369 / 373

On to step 7:
If we divide 2369 by 373, we get 6 and a remainder of 131.
Write down 6 as next digit of the result. 
Result so far: 13926.0
Subtracting 2238 from 2369 leaves us with 131.
Fetch the next digit (0) from the dividend, attach it to 131 and continue: 1310 / 373

Moving on to step 8:
The number 373 fits into 1310 3 times, leaving a remainder of 191.
Use 3 as the next digit of our solution. 
Result so far: 139263.0
Deduct 1119 from 1310 and we're left with 191.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1910, and continue the process.

Let's proceed to step 9:
If we divide 1910 by 373, we get 5 and a remainder of 45.
Use 5 as the next digit of our solution. 
Result so far: 139263.5
The remainder is 45 after subtracting 1865 from 1910.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Step 10:
373 can be fit into 450 1 times, resulting in a remainder of 77.
Record the quotient 1 as the next digit in the result. 
Result so far: 139263.51
If we take 373 away from 450, we end up with 77.
Since there are no more digits in the dividend, we add a zero to the remainder making it 770, and continue the process.

On to step 11:
373 goes into 770 2 times with a remainder of 24.
Use 2 as the next digit of our solution. 
Result so far: 139263.512
Subtract 746 from 770 to get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Moving on to step 12:
240 divided by 373 is 0 with a remainder of 240.
The next digit of our result is 0. 
Result so far: 139263.512
If we subtract 0 from 240, we get 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

Advancing to step 13:
373 can be fit into 2400 6 times, resulting in a remainder of 162.
Record the quotient 6 as the next digit in the result. 
Result so far: 139263.51206
If we subtract 2238 from 2400, we get 162.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1620, and continue the process.

On to step 14:
If we divide 1620 by 373, we get 4 and a remainder of 128.
The next digit of our result is 4. 
Result so far: 139263.512064
Subtracting 1492 from 1620 leaves us with 128.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1280, and continue the process.

On to step 15:
373 goes into 1280 3 times with a remainder of 161.
Use 3 as the next digit of our solution. 
Result so far: 139263.5120643
If we subtract 1119 from 1280, we get 161.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1610, and continue the process.

Step 16:
1610 divided by 373 is 4 with a remainder of 118.
The next digit of our result is 4. 
Result so far: 139263.51206434
Deduct 1492 from 1610 and we're left with 118.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1180, and continue the process.

The final result is 139263.51206434 with a remainder of 1.18e-07.