For reference:
In the triangle $ABC$; $M, N$ and $P$ are midpoints of $AB, BC$ and $AC$ respectively. If $H$ and $O$ are the orthocenter and circumcenter of this triangle and also $L$ is the midpoint of $MN$, calculate $\frac{HP}{OL}$ (Answer:2)
My progress:
$HB=2OP$(by property)
$MN = \frac{AC}{2}\implies LM = \frac{AC}{4} = LN\\\triangle HEQ \sim \triangle HDP \implies\\\frac{HE}{HD} = \frac{HQ}{HP} = \frac{EQ}{DP}\\\triangle BEM \sim \triangle BDA; k =\frac{1}{2}\\ \triangle BDC \sim \triangle BEN; k =\frac{1}{2}$
$LO$ is a median of $\triangle OMN$.
By geogebra $LO$ is parallel to $HP$.

$\angle HAC = 90^\circ - \angle C$. Also, $\angle ONM = 90^\circ - \angle C$. You can similarly check other angles to conclude,
$\triangle AHC \sim \triangle NOM$.
That leads to, $ ~ \displaystyle \frac{HP}{OL} = \frac{AC}{NM} = 2$