57×67,50= 62×40,95= 108×329,99=

To solve these multiplication problems, we can use the standard method of long multiplication.

57 × 67.50:

      57
   ×67.50
__________
     285        (57 × 5)

• 3420 (57 × 60)

__________
   3829.50

So, 57 × 67.50 = 3,829.50.

62 × 40.95:

     62
  ×40.95
_________
    124         (62 × 2)

• 4960 (62 × 80)

_________
    2539       (62 × 5)
_________

So, 62 × 40.95 = 2,539.

108 × 329.99:

     108
  ×329.99
__________
    108           (108 × 9)

• 972 (108 × 90)
• 10800 (108 × 100)

  ---

  35691.92

So, 108 × 329.99 = 35,691.92.