Given a disfluent sentence, modify the sentence to it to its equivalent fluent form, preserving the meaning of the sentence.

How old or rather how many successors of Kublai was Toghun the last of?
How many successors of Kublai was Toghun the last of?

If the average U.S. worker did less schooling, oh what amount of growth would be generated over 5 years no not less schooling but say if they did an additional year of school?
If the average U.S. worker were to complete an additional year of school, what amount of growth would be generated over 5 years?

Are the sizes of network bandwidths variable, oh actually, the size of the packets?
Are the sizes of packets variable?