Update bigint_modexp.md

EIPS/bigint_modexp.md

@@ -10,11 +10,14 @@ At address 0x00......05, add a precompile that expects input in the following fo
 
 Where every length is a 32-byte left-padded integer representing the number of bytes to be taken up by the next value. Consumes `floor(length(MODULUS)**2 * length(EXPONENT) / GQUADDIVISOR)` gas. If there is enough gas, returns an output as a byte array with the same length as the modulus.
 
-Example:
+For example, the input data:
 
- 000000000000000000000000000000000000000000000000000000000000000103
- 0000000000000000000000000000000000000000000000000000000000000020fffffffffffffffffffffffffffffffffffffffffffffffffffffffefffffc2e
- 0000000000000000000000000000000000000000000000000000000000000020fffffffffffffffffffffffffffffffffffffffffffffffffffffffefffffc2f
+ 0000000000000000000000000000000000000000000000000000000000000001
+ 03
+ 0000000000000000000000000000000000000000000000000000000000000020
+ fffffffffffffffffffffffffffffffffffffffffffffffffffffffefffffc2e
+ 0000000000000000000000000000000000000000000000000000000000000020
+ fffffffffffffffffffffffffffffffffffffffffffffffffffffffefffffc2f
 
 Represents the exponent `3**(2**256 - 2**32 - 978) % (2**256 - 2**32 - 977)`. By Fermat's little theorem, this equals 1, so the result is: