Deepika tells Shraddha,"Your mother's father's son is the husband of my sister." How is Deepika related to Shraddha?

Following questions are based on the information provided below:
$A \times B$ means $A$ is mother of $B$.
$A - B$ means $A$ is brother of $B$.
$A + B$ means $A$ is sister of $B$.
$A \div B$ means $A$ is father of $B$.
How is $H$ related to $D$ in $D \div R - M \times H$?

$A$ woman walking with a boy meets another woman and on being asked about her relationship with the boy,she says,"My maternal uncle and his maternal uncle's maternal uncle are brothers." How is the boy related to the woman?

$A + B$ means $A$ is the daughter of $B$; $A - B$ means $A$ is the husband of $B$; $A \times B$ means $A$ is the brother of $B$.
If $P \times Q + R$,which of the following is true?

Pointing to a photograph,a person tells his friend,"She is the granddaughter of the elder brother of my father." How is the girl in the photograph related to the person?

Lakshmi and Meena are Rohan's wives. Shalini is Meena's step-daughter. How is Lakshmi related to Shalini?