The face value of 8 in 458926 is 8

The local value of 7 in 5679032 is 70000.

Let y x 48 = 173 x 240
Then y = (173 x 240) / 48
=173 x 5
= 865 .

106 x 106 + 94 x 94 =(106)² + (94)²
=1/2 [2(a² + b²)]
=1/2 [(a+b)² + (a-b)²]
=1/2 [(106 + 94)² + (106 -94 )²]
=1/2 [ (200)² + (12)²]
= 1/2 x [ 40000 + 144 ]
= 40144/2
= 20072 .

5358 x 51 = 5358 x (50 +1 )
5358 x 50 + 5358 x 1
=267900 + 5358 = 273258

1307 x 1307 = (1307)²
= (1300 + 7 )²
= (1300)² + (7)² + 2 x 1300 x 7
= 1690000 + 49 +18200
= 1708249

1299 x 1299 = (1299)²
= (1300 - 1)²
= (1300)² + (1)² - 2 x 1300 x 1
= 1690000 + 1 - 2600 = 1687401

1014 x 986 = (1000 + 14 ) x (1000 -14)
= (1000)² - (14)²
= (1000000 - 196) = 999804 .

Given expression = a²+b²+2ab = (a+b)²
where a = 387 and b = 114
= (387 + 114 )²
= (501)²
=(500 +1 )²
=(500)² + (1)²+ 2 x 500 x 1
= 250000 + 1 +1000 = 251001.

Let the number be x.
Then, 11x =132
? x = 12