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import java.math.BigInteger;
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import java.util.Scanner;
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public class Demo {
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    public static void main(String[] args) {
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        Scanner scanner = new Scanner(System.in);
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        //1 000 000 000 000 000 000
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        String firstNumberStr = scanner.nextLine(); //"214124124312312"
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        String secondNumberStr = scanner.nextLine(); //"3"
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        BigInteger firstNumber = new BigInteger(firstNumberStr);
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        BigInteger secondNumber = new BigInteger(secondNumberStr);
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        //System.out.println(firstNumber.add(secondNumber));
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        //System.out.println(firstNumber.subtract(secondNumber));
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        //System.out.println(firstNumber.divide(secondNumber));
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        System.out.println(firstNumber.multiply(secondNumber));
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    }
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}