Inset Rows & Fill That Rows Base On Formula

dear friend in my document column "L" has some numbers & formulas.if any cell has formula base in that i need to inset rows below that formula cell & that formula need to spread on that new rows.i have 4 type of formulas.each formula has (1.5).that part is common. it 's like this...

(01.)ex- L1 cell =150*2*1.5 ,need to inset one row below this cell & after running the macro it should change like this..
L1 cell =150*1.5
L2 cell =150*1.5

(02.)ex- L1 cell =150*2*1.5+50*1.5 ,need to inset two rows below this cell & after running the macro it should change like this..
L1 cell =150*1.5
L2 cell =150*1.5
L3 cell =50*1.5

(03.)ex- L1 cell =150*2*1.5+130*3*1.5 ,need to inset four rows below this cell & after running the macro it should change like this..
L1 cell =150*1.5
L2 cell =150*1.5
L3 cell =130*1.5
L4 cell =130*1.5
L5 cell =130*1.5

(04.)ex- L1 cell =150*2*1.5+130*3*1.5+20*1.5 ,need to inset five rows below this cell & after running the macro it should change like this..

L1 cell =150*1.5
L2 cell =150*1.5
L3 cell =130*1.5
L4 cell =130*1.5
L5 cell =130*1.5
L6 cell =20*1.5