$baseValue = Read-Host "Enter the number you want to calculate 20% of"
$baseValue = [double]$baseValue

$expression = "0.20 * $baseValue"

$body = @{
    expr = $expression
} | ConvertTo-Json

$response = Invoke-RestMethod `
    -Uri "https://api.mathjs.org/v4/" `
    -Method Post `
    -ContentType "application/json" `
    -Body $body

# Extract numeric result
$raw = [double]$response.result

# Format WITHOUT commas
$formatted = "$raw $"

Write-Host "Result: $formatted"
Write-Host "Summary: $formatted is 20% of $baseValue"

Pause