It appears that the question is incomplete or unclear. The numbers "123456789" are repeated twice, but there is no context or question provided to determine what is being asked. Please provide more information or clarify the question so that a meaningful answer can be provided.
123456789 + 123456789 = 246913578
the answer is 15241578750190521
15,241,578,750,190,521
you get cheese
1
543234567890-123456789 = 543111111101
324536
123456789 +987654321 =1111111110
123456789-987654321 = -864197532
1.524157875019052e+16
1234567 + 123456789 = 124691356
123456789*1