Exercise in Removal from a B$-$Tree

Given $5-$way B$-$tree created by these data $($last exercise$)$:

$3,7,9,23,45,1,5,14,25,24,13,11,8,19,4,31,35,56$

Add these further keys: $2,6,12$

Then delete these keys: $4,5,7,3,14$

Please show your work when there is a split or a join.

note the last exercise was using the same key for insertion