987654321×12345-987654322×12344

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987654321×12345-987654322×12344987654321×12345-987654322×12344987654321×12345-987654322×123449876543

987654321×12345-987654322×12344
987654321×12345-987654322×12344

987654321×12345-987654322×12344
987654321×12345-987654322×12344
=987654321×12345-987654321×12344-12344
=987654321x(12345-12344)-12344
=987654321-12344
=987652977