Here is an example of what used to be required to typeset a page of complex mathematics before computer based typesetting, and TEX and LaTEX in particular, were invented.
From T W Chaundy, P R Barrett, and Charles Batey. The printing of mathematics. London: Oxford University Press (1954) p. 4
Cited in Three typefaces for mathematics. The development of Times 4-line Mathematics Series 569, AMS Euler, and Cambria Math by Daniel Rhatigan. (Which you can get HERE)