Question

Calculate: (6,666,666×666,666)/(1+2+3+4+5+6+5+4+3+2+1)− (777,777×777,777)/(1+2+3+4+5+6+7+6+5+4+3+2+1)

Answer 1

1066528471

Explanation:

`(6,666,666*666,666)/(1+2+3+4+5+6+5+4+3+2+1)` -
`(777,777*777,777)/(1+2+3+4+5+6+5+4+3+2+1)`

The lowest common multiple is 1+2+3+4+5+6+5+4+3+2+1, so that;

=
`((6,666,666*666,666)-(777,777*777,777))/(1+2+3+4+5+6+5+4+3+2+1)`

=
`((444443955600)-(60493706170)/(1+2+3+4+5+6+5+4+3+2+1)`

=
`(38395024940)/(36)`

= 1066528471

The solution to the given question is 1066528471.