Express the following standard form.
(a) 5 × 106 + 4 × 105 + 2 × 103 + 9 × 102 + 6 × 100
(b) 4 × 105 + 8 ×103 + 7 × 101
Write the numeral whose expanded form is given below:(i) 6×104+3×103+0×102+7×101+8×100(ii) 9×106+7×105+0×104+3×103+4×102+6×101+2×100(iii) 8×105+6×104+4×103+2×102+9×101+6×100