+ (NSString *)conversionThousandth:(NSString *)string
{
double value = [string doubleValue];
NSNumberFormatter *numberFormatter = [[NSNumberFormatter alloc] init];
[numberFormatter setPositiveFormat:@"###,##0.00;"];
numberFormatter.roundingMode = NSNumberFormatterRoundFloor;
numberFormatter.minimumFractionDigits = 2;
NSString *formattedNumberString = [numberFormatter stringFromNumber:[NSNumber numberWithDouble:value]];
return formattedNumberString;
}
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