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function calculateTotal(kgFatSum, kgSnfSum, commission, headLoad) {
  // Calculate the base value
  const baseValue = ((kgFatSum + kgSnfSum) / 12) * 100;
  
  // Calculate the commission and headLoad components
  const commissionValue = parseInt(baseValue * commission.toFixed(2));
  const headLoadValue = parseInt(baseValue * headLoad.toFixed(2));
  
  // Return the total
  return commissionValue + headLoadValue;
}