(999+51)+(362+654398)
=1050+654760
=655810
654398 + 362 + 999 + 51
= ( 654398 + 362 ) + ( 999 + 51 )
= 654760 + 1050
= 655810
(654398 + 362) + ( 999 + 51)
= 654760 + 1050
= 655810
654398+362+999+51
=(654398+362)+(999+51)
=654760+1050
=655810
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