paypal calc

use this format to calc your fee and the total from the amount using paypal payment .

const { calcUSD, calcILS } = require('discord-paypal-calc');
const { Percentage, fixedFee, totalFee } = calcUSD(amount) // do this format & insted of the amount use your content type if its in slash command use like this :
.addStringOption(option => option.setName('amount').setDescription('The Amount').setRequired(true)), 
async execute (interaction) { 
  const amount = interaction.options.getString('amount');
  if(amount) { 
    try { 
     const { Percentage, fixedFee, totalFee } = calcUSD(amount) // this is the amount content that i typed in the string Option up below .
     'Amount' = amount
     'PercentageFee' = Percentage
     'FixedFee' = fixedFee 
     'TotalFee' = totalFee
    } catch (err) { 
        console.error('There is an error', err);
    }
  }
}

this package will make your life easy to calculate your fee and the fixedFee from your amount using paypal payment .

make sure you following the right format