let totalAKHP;
let totalPresc;

if(data.akhp) {
    totalAKHP = data.akhp.reduce(prev, curr => prev + curr.totalFee, 0);
}
if(data.prescription) {
    totalPresc = data.prescription.reduce(prev, curr => prev + curr.totalFee, 0);
}

const total = totalAKHP + totalPresc;