S9fES (http://t3x.org/s9fes/ http://t3x.org/s9fes/) uses decimal-based real numbers and does multiplication, division and exponent equalization by shifting. It'

S9fES (http://t3x.org/s9fes/ http://t3x.org/s9fes/) uses decimal-based real numbers and does multiplication, division and exponent equalization by shifting. It's not hard, since one digit equals one byte.