4 / 812 does not terminate - it is approximately 0.004926108.
----------------------------------------
_______0_⋅_0_0_4_9_2
_____---------------------
812_|_4_⋅_0_0_0_0_0
_______3___2_4_8
_______-------------
___________7_5_2_0
___________7_3_0_8
___________----------
_____________2_1_2_0
_____________1_6_2_4
_____________----------
_______________4_9_6
496 > half of 812 → round up
→ 4 ÷ 812 ≈ 0.00493
If English is not your first language, but Spanish is, I suspect that you may want 812 ÷ 4 (812 divided by 4):
_______2_0_3
_____----------
__4_|_8_1_2
_______8
______----
_________1_2
_________1_2
_________-----
____________0
→ 812 ÷ 4 = 203.
0.0049
3
0.0049
4 90
0.175
143
2.25
40.5
116
59
6.75
24.5