Show the Proof

import proveit
# Automation is not needed when only showing a stored proof:
proveit.defaults.automation = False # This will speed things up.
proveit.defaults.inline_pngs = False # Makes files smaller.
%show_proof

	step type	requirements	statement
0	instantiation	1, 2, 3	, , ,  ⊢
	: , : , :
1	theorem		⊢
	proveit.logic.equality.sub_right_side_into
2	instantiation	18, 9, 4	, , ,  ⊢
	: , :
3	instantiation	5, 6, 7	, , ,  ⊢
	: , : , :
4	instantiation	18, 16, 17	,  ⊢
	: , :
5	axiom		⊢
	proveit.logic.equality.equals_transitivity
6	instantiation	10, 8, 12, 11, 15, 13, 9, 16, 17	, , ,  ⊢
	: , : , : , : , : , :
7	instantiation	10, 11, 12, 13, 14, 15, 19, 20, 16, 17	, , ,  ⊢
	: , : , : , : , : , :
8	theorem		⊢
	proveit.numbers.numerals.decimals.nat1
9	instantiation	18, 19, 20	,  ⊢
	: , :
10	theorem		⊢
	proveit.numbers.multiplication.disassociation
11	axiom		⊢
	proveit.numbers.number_sets.natural_numbers.zero_in_nats
12	theorem		⊢
	proveit.numbers.numerals.decimals.nat2
13	theorem		⊢
	proveit.core_expr_types.tuples.tuple_len_0_typical_eq
14	instantiation	21	⊢
	: , :
15	instantiation	21	⊢
	: , :
16	assumption		⊢
17	assumption		⊢
18	theorem		⊢
	proveit.numbers.multiplication.mult_complex_closure_bin
19	assumption		⊢
20	assumption		⊢
21	theorem		⊢
	proveit.numbers.numerals.decimals.tuple_len_2_typical_eq