Got the question as it is. Please show me the methodology of finding the right answer

Use the below information to calculate the profit or loss of a long call butterfly spread in the spot pre of the indelyes asset at maturity is R89.94. June 70 Call costs R1.53 June 80 Call costs R2.93 June 90 Call costs R3.3 June 70 Put costs R1.50 June 80 Put costs R3.50 June 90 Put costs R7.50 INSERT THE NUMERICAL VALUE ONLY (INCLUDING A NEGATIVE SIGN IF IT IS A LOSSI AND ROUND OFF YOUR ANSW TWO DECIMAL PLACES