Ineed to know the answer on record the perimeter

Idon’t understand this.. will someone ? will mark brainliest along with 20 points.

Which is the standard form for this number? (4 x 1 100 ) + (8 x 1 1,000 ) + ( 3 x 1 100,000 ) ? a) 0.004803 b) 0.04803 c) 0.0483 d) 0.483

50 points~ ! i have to turn this in tomarrow