I’m having some trouble with these three questions it would be a big if someone could me out : )

A=negative 1,020,000,000,000=407 to the 9th power of ten+337 to the 9th power of ten+276 to the 9th power of ten
*power of ten are exponents(negative numbers)

b=10,000,000=4 to the 6 power of ten+4 to the 6th power of ten+2 to the 6th power of ten
*power of ten are exponents( numbers are negative)

c=1,019,990,000,000